I really like it. While many players dislike it, I was quite happy when the idea was implemented. I, and many others, enjoy some underplayed maps. With the previous system, those maps were never voted, because players prefer the 'better' maps. This system allowed me to play those maps I wanted to play.
I will admit there where times where I was mad that maps I dislike won over popular, mainstream maps such as SG4 and Valleyside University, although it was for the better. While those maps are great, variety is even better. I don't know about the average 'competitive' player, but I like to play many different map styles. Playing maps like SG4, Valleyside, and other popular maps gets very boring, the gameplay gets repetitive, and eventually you just leave because there was nothing new.
This new feature changed that. It added variety to the games, and made you anticipate what map you might play on. With the old system, every time I joined a lobby, I didn't bother looking at the voting options because I already knew which map would win. This system, however, changed that for the better.
All in all, please do not revert the voting systems.