Silverbear, Project Image illusions can attack physically, if you use them properly in conjunction with another spell.
Project Image is the number one reason why Sorcerers are the easiest pureclass to solo with. Project Images can cast the high level spells, Simulacrums cannot.
Project Image is the keystone in the PRATI tactic, the endless spells tactics, the reason why Weimer laments they have too easy a time in his Improved Mods, etc... ...
Spells are power, and Project Image enforces that concept.
Spell Immunity
ivination renders your PI immuned to True Sight by the way. To dismiss Project Image as not a great spell, is to not know the true extent of the Mage/Sorcerer's capabilities.
Personal opinion ahead,
STR: 12+
DEX: 18
CON: 16
INT: 10
WIS: 18
CHA: 08
A total of 82 stat points. Extremely easy to get.