Let me just say, I still think they're a fine idea as is, (after all, there are plenty of "too weak" feats, that's not nearly as bad as "too strong"!).
Let's take for example forbearing defense: This requires Combat expertise and Combat reflexes as prereq, and that means Int 13 and most likely Dex 12, 14 or more to take advantage of combat reflexes. That's quite a cost; and by using the feat you completely give up the benefit of combat reflexes. On the other hand, the benefit is quite good.
As-is, I think they're not bad, but because they're so situational, I don't think they'll be taken by many players. Extra active options are just an easy way to make em especially attractive to fighters (unlike dodge, which is just a hassle) and there are other feats that follow that model, since those characters often have few options otherwise; extra options mean something to them, and that's also the model Tome of Battle uses (quite successfully, by all accounts). It's a sneaky way of rebalancing not the power balance, but the choice balance, which hopefully won't break your game, but still make out-of-game player fun more balanced between classes.
Anyhows, I do think the feats are power-wise not badly balance, and are a good idea. Go ahead an use em, and see if anyone chooses em!