Map voting won't be back, I don't think it would matter a lot anyway. As said before, most people just picked the top map and only a handful people actually voted. The system I had in mind, would be one with the top option being 'None' or just a blank option, for the people that didn't want to vote or just skip the screen, and the maps being the remaining maps of the 'cycle'. For example, if we've played LS and LV already, you'd only be able to choose between SF, RC, FC, WV and NSA. But, I think the greatest downside of this system is, that people will always pick the more popular maps, and we'd probably always end up with FC and NSA as the last options and a lot of players would leave once they see the next 2 maps are going to be that.
Now, I'll look into adding the distribution Altus suggested, but I doubt it will have any noticeable difference on such a small scale. I'm willing to put it to the test though, but it might take a while until I get around to that.