What about the ranger, fighter, barbarian? is very easy to do, lol, also some spells, like bulls strenght and stuff (edit: actually i couldnt do it now, as i dont know where the script is and i dont remember how to compile them... anyone can help me?), really easy to 3.5 it (As i have done it myself using evenflw 3.5 mod for comparing xD ps: want my files?).
So, im back after playing DA, DA2, Diablo 3... and they all started to frustrate me sometime (specially D3, damm YOU BLIZZARD!) great to know PRC is still alive.
I'm making some new walkthroughs now with this mod and classes as close to 3.5 vanilla that i can (with minor changes of my taste; no lightblindness for drows, no -2 cha for hforcs - to be equivalent of wood elves, wtf were they thinking when made this, dont you agree?), i hope it will be very fun trying some new classes and the very difficult option =p.
Edit: unless its something really obscure, i really don't think you have added hide in plain sight for assassin lvl 8 as it should in 3.5 (at least nowhere in the description/feat.2da), since its been updated like you said =x.