First question - according to this faq bane/furious won't work past 10 effective enhancement? And if I want to benefit from those abilities on highly enhanced weapon - I must leave an empty +2 slot? If I'm getting this right - it is somewhat silly and underwhelming.
Second question - how does dispelling ability work with Barbarian spell sunder? I store dispel in it, and when I spell sunder - it is used up as per spell storing ability, so I need to "restore" dispel again?
You can have a +5 Bane Keen Flaming Frost Shock weapon, and it will become a +7 weapon that does another 2D6 against the designated type when Bane is active. Even with Bane active, it's not breaking the +10 cap.
Are you sure about that? It seems the last bit of the faq above was written precisely to keep the bane under the ten.
Dispelling and Spell Sunder are separate effects
the caster level check to dispel gains an additional bonus equal to the weapon's enhancement bonus. This bonus also applies to a magus's dispelling strike arcana or a barbarian's spell sunder
1) The +10-equivalent is a hard cap. The bane's extra +2 won't go into effect if it results in a +11-equivalent or higher in combined enhancements. There's a variety of good reasons why this rule exists. As a player, you shouldn't worry too much about it. Unless you're a magus or a 20th level character, you'll probably never get a weapon expensive enough to make this a problem. Even if it does happen, you still get the benefit of bane's damage bonus. Just spend your wealth elsewhere. It's probably better that way, anyway, since the price of a wealth increases quadratically.
2) I'm assuming you mean a barbarian using Spell Sunder while carrying a spell storing weapon with dispel magic in it? Using spell sunder will not trigger the spell storing effect. The spell storing effect requires that your weapon deals damage. Spell Sunder doesn't deal any damage. It just uses lets you perform a combat maneuver check to dispel a magical effect. However, you can full-attack and perform one after another. Sundering takes the place of a melee attack. You can trigger the stored dispel magic on a normal attack and then do spell sunder in place of the next attack in case the first dispel attempt failed.
The spell storing effect requires that your weapon deals damage. Spell Sunder doesn't deal any damage. It just uses lets you perform a combat maneuver check to dispel a magical effect.
So dispelling ability will let me to add weapon enhancement bonus to spell sunder check without spending stored dispel magic? It is somewhat strange, though, since I will benefit from enhancement bonus anyway, because sunder maneuver adds all attack bonuses to its check anyway.
There's a variety of good reasons why this rule exists.
Like what? I find this faq very disappointing - I'm paying for a very narrow enhancement that will lose most of its appeal in the long run anyway.
The spell storing effect requires that your weapon deals damage. Spell Sunder doesn't deal any damage. It just uses lets you perform a combat maneuver check to dispel a magical effect.So dispelling ability will let me to add weapon enhancement bonus to spell sunder check without spending stored dispel magic? It is somewhat strange, though, since I will benefit from enhancement bonus anyway, because sunder maneuver adds all attack bonuses to its check anyway.
Yes, I don't see why it wouldn't allow you to add that bonus to spell sunder. That bonus is independent of the storing ability. Depending on your GM's interpretation, it could mean that you essentially can add the enhancement bonus TWICE to spell sunder.
There's a variety of good reasons why this rule exists.Like what? I find this faq very disappointing - I'm paying for a very narrow enhancement that will lose most of its appeal in the long run anyway.
It's hard capped for game balance to ensure bonus effects like this don't get overblown in end game. It also has to do with wealth. Equipment generally shouldn't have a price more than 200,000 gp because 25% of a characters' wealth shouldn't be invested in one item. 200k is roughly 25% of a 20th level character's wealth. That's just a few reasons.
Honestly, I don't think it's a big deal unless you have a very high level campaign. Even a 20th level character will likely not run into that scenario. If you have a +8-equivalent weapon, just invest your wealth elsewhere. Bane is still amazingly awesome at this level because it allows you to bypass DR/epic if it pushes the enhancement bonus to +6 or higher.