Expanding the Weapon Focus & Specialization feat chain

[Valkyn Highwind]

Recently I stumbled across some old notes for expanding upon the Weapon Focus and Specialization feat chain. So I drummed of a pair of semi-polished and semi-workable additions. They don't have any 'flavor' text like most other feats do yet.

Weapon Master (Combat)
Prerequisites: Proficiency with selected weapon, Greater Weapon Focus with selected weapon, Weapon Focus with selected weapon, Greater Weapon Specialization with selected weapon, Weapon Specialization with selected weapon, 16th-level fighter.
Benefits: You gaine a +2 bonus on all Initiative rolls you make when wielding the selected weapon only. Also, increase the base critical threat range of the selected weapon by one (A Longsword would have a threat range of 18 to 20 with this feat). This effect stacks with the one from the Improved Critical feat or the Keen weapon enchant.
Special: You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new type of weapon.

Weapon Grandmaster (Combat)
Prerequisites: Proficiency with selected weapon, Greater Weapon Focus with selected weapon, Weapon Focus with selected weapon, Greater Weapon Specialization with selected weapon, Weapon Specialization with selected weapon, Weapon Master with selected weapon, 20th-level fighter.
Benefit: Increase the damage die of the selected weapon by one size up (a grandmaster of the longsword would deal 1d10 damage instead of 1d8). Weapons with multiple damage dice increase all of them (a grandmaster of the greatsword would deal 2d8 damage instead of 2d6).
Special: You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new type of weapon.

[Darksol the Painbringer]

The first one doesn't even make sense mathematically. Would this +1 increase apply before or after Improved Critical threat ranges? Because critting on a 13-20 is absolutely broken, and critting on a 14-20 is already a capstone of a different (albeit similar) class.

Weapon Grandmaster is actually even worse than Weapon Master, and doesn't even scale right. A Longsword would deal 2D6 damage, not 1D10. A Greatsword would deal 3D6 damage, not 2D8. Also, since this is an Effective Size Bonus, it would not stack with subjects like Lead Blades or the Impact property.

I'd suggest you inverse the requirements and names between the two feats, and make a few more clarifications as to how the feats interact with other subjects, because it's either shaky (and overpowered), or just plain incorrect.

[Mudfoot]

Weapon Master is OK, if unremarkable (in that it's half of Improved Initiative plus about half of Imp Crit, depending on weapon). It's quite nice for a critfisher, but I doubt anyone else would bother. There are better feats at that level.

Grandmaster is rubbish, given the 20th level prereq. Unless you're enlarged a LOT, this is like +2 damage when you're probably doing +50 anyway. It's pretty poor at 1st level.

(+5 2H sword +12 Str +2+2 IWS +18 PA +4 WT = +43 before buffs)

[My Self]

Grandmaster seems to be weaker than the thing in WMH that lets you use Warpriest weapon dice instead of your weapon dice. Perhaps if Grandmaster let you treat yourself as one size larger (if beneficial) for any interactions with your chosen weapon (weapon CMB/CMD checks, weapon damage dice, how big of a weapon you can wield, penalties for wielding big things, etc.), it would be stronger?

[Valkyn Highwind]

Those were the watered down versions of my original notes from the days of 3.x. Here are the originals. I was concerned that these would be overpowered within Pathfinder.

Weapon Skill Feats ~~ Prerequisites
Proficiency ~~ ---
Focus ~~ Base attack Bonus +1 or higher
Specialization ~~ Fighter Level 4
Master ~~ Fighter Level 8
High Master ~~ Fighter Level 12, Improved Critical (same weapon)
Grandmaster ~~ Fighter Level 16

Effects of Master level skill
An additional +2 attack bonus and +1 damage bonus (for ranged weapons only apply damage bonus at 30 feet or less (as established in the weapon specialization feat, see page 37 of the PHB))

Effects of High Master level Skill
+2 Iniative bonus when wielding that weapon only, increase base critical threat range by 1 point (Long Sword would threaten 18-20) this bonus stacks with the Improved Critical feat (Final threat range would be 15-20 for a Long Sword). Ranged weapons increase their range increment by 25% (rounding down, Light Crossbow would increase to 100 feet)

Effects of Grandmaster Level skill
Grand masters gain the ability to, when using the full attack option, make an extra attack using their base attack bonus and when using the standard attack option (move base speed and attack) they gain the ability to make a second attack at their base attack bonus minus 5 points. They increase the damage die of the weapon to the next size up (long sword grandmasters would use 1d10 instead of 1d8), weapons with multiple dice increase all of them (a Great sword would now do 2d8 instead of 2d6) also increase the Critical Damage multiplier by a factor of 1 (x2 to x3).

[My Self]

Increasing crit damage is something Fighters now get at 20th, so that would be overkill. Increased damage dice is something Fighters with Weapon Training can do now, too. so that's probably redundant. Being able to make an iterative Standard Action attack would be pretty awesome, although some builds can move and full attack at this point. An extra attack sounds more like a 1st and 11th level 3.5e Monk or Unchained Monk ability. Perhaps you expand on the option to do iteratives as a standard action? More damage dice seems boring.

[Night_Shade]

I would suggest a feat that applies to one weapon that would increse the crit modifier by 1. This could be with a weapon that you have greater focus (or weapon of choice class feature)[if it still exists] and another that increases the die type by 1 after having greater specialization with the weapon.

for the feats above, maybe include imp crit as a pre-req as well.

Just some ideas as well :-)

[Valkyn Highwind]

You've all given me some good ideas about these feats. Thank you. Further comments will be welcome as well.

[Ciaran Barnes]

This wordings aren't great, but you should be a badass with any weapon you have sank so many feats into.

You can make an attack of opportunity with your mastery weapons against an enemy with a lower BAB that enters your threatened area.

You gain a +5 bonus to perform combat maneuvers with your mastery weapon, and to resist any combat maneuver made against your mastery weapon.

You have no limit on the number of attacks of opportunity you can make with your mastery weapon.

Your mastery weapon gains a +10 bonus to all saving throws.

[Valkyn Highwind]

I think I'm going to have to table this idea for awhile and rethink it. I'm doing this because apparently I didn't think it through.