Really, only two things:
The abysmal Intelligence (which is fixable if I can move the stats around), and the Size Change.
And, I confess, Size Change is mostly only a problem because of the aesthetic and because of the vast, hulking Dex penalty.
I keep trying to motivate myself to play against type and try a big, stupid, clumsy character...something I've never really done before. But the fact remains that there's a -reason- I've never played a big, stupid, clumsy character before.
By the same token, I appreciate that a random system loses its integrity with rerolls...so that's not what I'm asking for. Honestly...not sure what the best option here is. I'd be fine with the character if I could arrange the rolled scores instead of having them assigned...which I'm still a bit stunned they don't let you do in the rules...and I'd be willing to simply forgo the Size Change mutation completely. Not reroll it...just have one less mutation than I'm entitled to.
Or if you have suggestions, I'm wide open to them.