Good point, glad you brought it up.
I think there are going to be multiple polls for different categories, like one for the best flow/playablility, one for looks, etc. I also thought already that a poll system might not be a great idea since they are so easily manipulated, so maybe a verbal vote would be necessary, like commenting "I vote this map for this category". For now I think the best option is to just map with everything in mind, like good looks, good flow, pretty close to the original yet still unique, etc.
I expect that Suicizer will address this much better.
Edit: I also hope that Sui, since he is technically the one in charge of this, will be a judge of your map being close enough to the original to actually call it a remake. I think that ideally everyone should be familiar with everyone else's original maps so that we can all cast a fair comparison vote, but I understand this is a lot of work for everyone. Maybe someone can make a video or some sort of visualization including every map so everyone can get an idea of the map without downloading it.