I will say some of the starting classes seem oddly optimized and sometimes bad.

Witch is bad... But that is because Necromancy REALLY doesn't benefit a backline... And the contamination combo is not only risky but it doesn't pay off...

Shapeshifter is WEIRD in that it uses a Spear but doesn't benefit strongly from one... and instead splits its pool up as a pure class. Given the spear is the worst weapon type in the game (TERRIBLE compatibility all around), I almost think the Shifter has it.

The MOST I can assume is it exists to get use out of all the shifter's skills... given there is SOME hints it will use Dex and Strength (though currently it only uses Strength)