The really major ones earn you a little story blurb and a bit of experience. I dunno, my job is to rip and tear and rend flesh, not do silly things like propose solutions. First off, for an independent release, character construction is surprisingly detailed. Oh, most of these have identifiable types, but it's just plain FUN to make a party of Bezerkers and run around smashing things. Or, if you're a control freak, or just want to dump every skill point into something fun like Luck.
Luck is actually very useful, and dumping a few points into it IS a wise idea.
However, perhaps the most fun part of creation is the Character Traits selection. There are some useful ones such as Fast on Feet and Elite Warriors, and all are accompanied with some very fine drawings. But the best, the coolest part ever is the bad traits. Cursed at Birth features a safe falling on a bassinet, which is oddly funny. You freeze up when creatures attack you.