Making an Archetype

[Iphriam]

Hello, I recently got into Pathfinder and joined Paizo, and am looking to build my own campaign for my friends. Unfortunately, I've run into a little snag in the the balancing of a new archetype.

I wanted to give the fighter a little investigative prowess for an NPC companion, so I named the archetype "Sheriff." I've been building it using the fighter, its tactician archetype, and the investigator as guidelines for it.

Without further ado:

Fighter (Sheriff)

Weapon and Armor Proficiency: A sheriff is not proficient in heavy armor or tower shields.

Lawman (Ex): In place of the fighter's 1st level bonus feat, a sheriff receives amateur investigator as a bonus feat. Furthermore, a Sheriff gains 4 skill points + a number of skill points equal to his Intelligence modifier at each level, instead of the normal 2 skill points + Intelligence modifier at each level.
Sheriff replaces the normal fighter class skills with: Appraise (Int), Bluff (Cha), Climb (Str), Craft (Int), Diplomacy (Cha), Disable Device (Dex), Escape Artist (Dex), Intimidate (Cha), Knowledge (all) (Int), Linguistics (Int), Perception (Wis), Profession (Wis), Sense Motive (Wis), Spellcraft (Int), and Use Magic Device (Cha).

Bonus Feats: A sheriff may choose Skill Focus and inspiration-related feats in addition to combat feats, as bonus feats.

Investigative Knack (Ex or Su): At 4th level and every four levels thereafter, a sheriff may choose an investigator talent instead of the normal fighter bonus feat, barring those relating to the alchemist and rogue classes, treating her fighter level as her investigator level. This potentially replaces fighter bonus feats at 4th, 8th, 12th, 16th, and 20th levels.

This is what I have so far, and I'd appreciate some vets taking a look and telling me if I could perhaps add more or balance it better as well as give suggestions on how to do so. :)

[Blackbot]

You couldn't have picked a wronger forum. Yes, that's not even a word, I know. ;)

Pathfinder Society is all about playing "by the rules", no homebrew-stuff there. You're looking for the Homebrew/Houserules forum. I flagged the thread so that it will be moved there. :)

From first sight, though: It seems as if the fighter loses very little (first feat is predetermined, no heavy armor) and gains very much (2 skill points, new (arguably better) class skills, more choice in bonus feats - he's not even forbidden from using his bonus feats the "normal" way but instead gains it as an option.
Honestly, as it is written I'd just choose it as an archetype for most of my fighters and just would not bother with picking up investigator talents. That's an indicator it's a little unbalanced. ;)

Suggestion: He's not proficient with heavy armor, perhaps he could lose some of his Armor Training class features?

[Iphriam]

Blackbot wrote:

Many thanks for the suggestions! And sorry, I'm sorta new to the forums. xP

Anyway, that occurred to me a few minutes ago, so I thought that I might gimp the armor mastery some by making it only come into effect when fighting humanoids of the opposite alignment, and imposing a LG or LE alignment requirement on the archetype. I was gonna rename the ability Public Defender/Terror.

I've also been weighing the choice vs total replacement. I might end up going with total replacement in the end.

Additionally, I replaced bravery with "civic authority" which changes the plus +1 on will saves vs fear to +1 to diplomacy, intimidate, and knowledge (local).

Slowly but surely.

Edit: Also I'm an idiot. I confused armor training with armor mastery for some reason. xP
Either way, you've given me some stuff to think about, and I deeply appreciate that.