I meant the PnP shifter form. I thought the PnP shifter was only giving a magical bonus to your atributes (up to +12) because people were unable to code it in a way that it would change your stats accordingly to your shifted form. Well it was the case back in the day (didnt play in 4 years).
I'm actually the one who is currently working on the PnP Shifter class.
It's true that it can only boost your STR by +12, but it compensates for this by directly boosting your AB if it has to. For instance, if your STR is 16, and you shift to a form with STR 36, the PnP shifter will add 12 to your STR (which boosts your AB by 6) and then adds an additional +4 to your AB (and to damage) to compensate for the missing 8 STR points. As far as I know, it has been this way for a long time. The next version of PRC will also take into account any STR boosting equipment, whih previous versions did not do.