This is very clearly a competition. Yes, we don't know how many slots there will be, but there certainly won't be a lot. If we were to get 6 DLC spots, which is about what most people expect, with 3 of them going to the ballot, obviously characters are going to compete for those spots. Yes, it isn't a straight popularity contest, as they can't allow someone like Goku to win. But you are foolish to think that if K. Rool gets more votes than Wonder Red, they will both be given an equal amount of consideration as a character.
Don't be an ass to the other communities for sure, but this IS a competitoin. That's the reason why I vote for no one other than K. Rool, because I don't want to help the competition. Be civil to each other, but realize that there are only so many spots available, and there are DEFINITELY more contenders than there are spots to fill.