You need some organization, else you'll get some problems with the mappers out of the list. But, well, looks like a good idea.
I'll try to participate (voting, not mapping lol) from time to time.
But, since I dont feel like just giving a reason why I pick the map I pick would be fair to the others, I'll also write a bit on why I didnt like the other candidates (yeah, there's zel, always creating his own rules... XP)
I'll start with the ones I didnt pick...
エロカメ's map: Looks decent, but I dont think first town maps are usually interesting. The snowy tileset is kinda overused, and out of those, I prefer the one that has the appearance of having everything under snow (houses, trees)
Mr.Fury's map: Snowy, again. But at least the trees distribution makes the map look more cool. But, was it a town or a route? I didnt understand that.
Darthatron's map: Being honest, it was a bit boring, but probably because it was supposed to be a city, with everything perfectly aligned. I didnt like the über big Pokemon Gym.
Perhaps if the park (was it supposed to be a park, with the fountain?) were in the middle of the city, just to destroy a bit of the order I could have liked it more.
Satoshi Sugimori's map: Although the map looks pretty well designed, my only problem lies in the palettes. I'll give you that I dont think I have seen such palettes in the past, but on the other hand I didnt like them. A bit too strong for me, sorry.
And so... My pick goes to...
G@mbit's map: I cant force a R1 map to be a bit bigger (but I still recommend a small expansion)
Maybe didnt require too much effort mapping, though. But I'll still pick it because I think it seems to be the most balanced of the five: I like the palettes, the mapping is ok, and it combines some Kyle, DP and a few tiles I havent seen before.