I like the idea, though I really honestly believe that as of this moment in time, Crytek are a little busy trying and working hard to release a new patch for the consoles as well as the PC. Though, not a bad idea, I would not endorse a "Fun" rating, as the truly, good maps, will get voted down by noobs and inconsiderate players who think it is "Funny to make something bad" for the sake of ensuring they get the **** maps and have the good ones, for and only themselves.
Although the idea of a free-map pack would be nice, Crytek really have too much to do as of 2 months ago, however, they might produce some free DLC to compensate (such as the current map pack available, as I have purchased it hoping it would bring back some of the online elements) but, I was wrong. As I admit.
Also, the new game mode would be a good idea, perhaps a standard, isntant spawning TDM would be good, like old times. A normal, good way to play the game, pick up the guns. For example, you start with pistols, you find the guns you want. This means, like "Gears of Wars" gameplay, or even Oldschool TDM (Not a reference to Call of Duty gametypes, a reference to oldschool FPS games where weapons had to be obtained on certain locations of the map) would bring back some of the online gamers as they peer through the window watching with wide-eyes not knowing whether or not they should perhaps buy the game.