Just my opinion...
What if a writer does an awesome fight scene that misses consideration for a Kampy because it isn't as attention-getting as a hilarious gag in another story entirely? Or what if a powerful moment of characterization or convincing romantic moment is denied the attention it deserves because it isn't tailored to short attention spans like an impressive entrance for a new character? That was my reasoning behind having different categories like Best Laugh or Best Fight Scene and so on, instead of one award that's supposed to allow for equal consideration of the many different kinds of great moments we write. I really think that makes us take a longer look back and appreciate all the things that happened, not just one or two.
I'm not being self-seeking here; I haven't finished jack shit this year, and only a small handful of things I've done are even partly deserving of an award. I just want to see more people's work get a shot at some recognition.