Covering Defense is great to have on a minion(if it took less than Total Defense then maybe we got a thing going), remember what Cover voids. AoOs stop dead.
Dastardly Finish meanwhile, provides an avenue to take down difficult opponents, just need a reliable daze or fear source.
Dazing Assault's penalty is probably too hefty for most, but after the change to Power Attack, Fighters(esp with weapon mastery), Smiting Paladins and Barbarians probably have the to-hit to spare.
The Extra [Whatever] feats are a nice touch, you get to trade feats into your class special features. Not sure if theres any internal logic to which abilities get those feats and which don't.
Furious Focus meanwhile, is pretty awesome at low levels and for charging builds. Power attack at no penalty to the first attack! Why the hell not? Later on you'd be swapping that to hit out for stuff like Dazing Assault anyway, so at least you can still connect and to spare.
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Teamwork feats in general have some interesting effects as well, but the problem is needing multiple compatible players with them. Things like Lookout are incredible if theres no other pressing feats to take though. Especially if you have a Diviner wizard or some other kind of unsurprisable people in the party.
Paired Opportunists and Outflank are nice to have in gimmick parties. Basically get two rogues, Combat Reflexes and have fun. Flank, attack with high crit weapons(preferably TWFing as rogues) and when you crit, the target draws an AoO from your ally via Outflank, who 'clones' the AoO to you via Paired Opportunist and generally rip the poor target apart. You'd need Gang Up, but since all those are Combat feats, a Fighter dip would be good.