Killersword character

Does anyone think that would be nice idea to make my character to suffer some emotional changes. He is not good or bad. Or maybe he makes some turns and anyone cant now what happens next. Or does this sounds just stupid?

And one wich for new GM and possible opponents. If I write promos please dont change them so much than I dont see after that anything for original idea. Language correction is ok but not everything other too. I maybe not always don't use long speeches. Not Wwe style because we are not them. My style is say things sometimes short and maybe longer. Too much changes and idea is lost and it will compensated for GM:s or others idea. Is that okay?