there are several things that make shapeshifting one of (if not the) weaker specializations in the game, cast time (easy to fix with a mod), shape attribute scaling (again, there are mods), but there's one thing that also makes it an underpowered specialization is the fact that Modals (sustainable talents) are deactivated when you transform.
Does anyone know how to do make modals (sustainable talents) remain active during Shapeshifting?
Sorry Bad english.