- Deadly defense (not currently working last I tested) - gives you d4 bonus damage with finesse weapons while in Parry or CE mode.
- Sembian Fencing - Fewer attacks, but you gain AB and Damage (2 / attack lost). Useful if you aren't getting enough hits or are having problems with DR. If you have 6 attacks / round this will give 8 AB and Damage! Yes you only get two attacks, but both are likely to hit at least. The DEX bonus can also add to attack and AC dependent upon the type of armor and if you are already capped.
Athkatlan Tripirate - can be used alongside Sembian Fencing, especially since being limited to 2 attacks / round there is nothing extra lost by using this. Gives extra AB and dodge AC
Lunge - +5 free damage once / turn and if you have high tumble or spring attack the AoO doesn't really effect you.
Pommel Strike - Opponent denied DEX AC = Sneak Attack! Useable once every two rounds and opponent gets a reflex save vs. DC 10 + 1/2 your total AB. Also the enemy has to make a Fort save vs. DC 10 + STR modifier (increases by one at character level 15, 20, 25 and 30)... You may not get the Daze effect that often with a DEX/INT focused build, but your enemies should fail the reflex save fairly often (total AB 44/2=22+10 would be a DC 32, for instance)
If going heavy Rogue you could also look in to Blinding Strike, which can blind the target for d4 rounds if target fails fortitude save vs. DC 10 + 1/2 your rogue levels + 1/5 your character level + 1 every 5 Rogue levels (so if you take 16 Rogue levels, at level 30 your DC is 10 + 8 + 6 + 3 = 27.
Point being, as you can see there are multiple ways to land sneak attacks and gain AB / Damage with the new melee feats. Not sure all of them work, but most did when I tested in QC JEGs / Server 2 and I assume the rest were fixed in some way. In any case with free RCR maybe a good time to see if any of these fit your concept and work for what you are trying to do mechanically. You could always still also have feint, but against a High BAB spotter you could try some of the other 'tricks' in your bag.