Sorry, didn't mean to offend. I was more referring to the typical rogue/ninja build I've seen in both film and RPGs, who tend to use STR as a semi-dump stat.
Actually works really well with the source material: Conan. He actually "plays" more like a ninja/rogue in the stories, except that he doesn't do it with a crap strength score. (My understanding of actual ninjas is that they were pretty buff, for that matter...)
Thing that jumps out to me is that, especially given the way level costs scale, the feat purchasing in particular could get extremely powerful. Particularly if they're playing feat-heavy classes like fighter or rogue, they'd be silly not to delay by a fraction of a level to get a spare feat...
Seems to me that a good middle ground was hit on by an earlier post:
Limit the effects of Parry by damage type, perhaps expanding the range of those effects for character carrying a shield.
A new example wording:
It gives fighters the ability to parry things that can reasonably be smacked...