I've got a PnP Shifter change that I'm currently testing that would be cool to get into the 3.4 release if possible. It uses NWNX, if installed, to set the STR, DEX, and CON of the PC to that of the new shape when shifting. This eliminates the need for all the hacks that have been used for simulating really large stat boosts in spite of the +12 ability bonus cap.
If my testing works out, I can post the changes in a couple of days, perhaps.