Li Shenron
Legend
Sounds a very nice idea to me, go ahead and try more examples!
A couple of things that come to my mind are:
1) those prestige classes which give the same kind of special ability every level seem to be perfect for this experiment; the DMG ones are Archmage, Hierophant and Horizon Walker, which may need only 1 feat each
2) this system may work better if you slightly increase the total number of feats per characters; also if there are many feats resulting from the conversion of a PrCl, making them a feats tree instead of a feats chain could be more interesting (to have members of the same PrCl with different abilities)
3) some of the prestige feats could actually be allowed as fighter bonus feats as long as they are clearly combat-oriented; anything that makes fighters attractive at high levels is welcome

A couple of things that come to my mind are:
1) those prestige classes which give the same kind of special ability every level seem to be perfect for this experiment; the DMG ones are Archmage, Hierophant and Horizon Walker, which may need only 1 feat each
2) this system may work better if you slightly increase the total number of feats per characters; also if there are many feats resulting from the conversion of a PrCl, making them a feats tree instead of a feats chain could be more interesting (to have members of the same PrCl with different abilities)
3) some of the prestige feats could actually be allowed as fighter bonus feats as long as they are clearly combat-oriented; anything that makes fighters attractive at high levels is welcome
