HTC treats player made maps with pure disregard. Who knows why, it is absolutely ridiculous. I know many people have submitted maps, only to be told they needed "tweaking" for the MA, or that they were under review, never to be heard from again. The last time I saw a truly new map make it to the MA's was almost a year ago.
Also, every time someone posts some images of a map they're working on the forums, the same hackneyed bunch here comes and says "its good, but not for the MA yet!" or "the MA is a completely differently ballgame, son" as if every map needed to have some hithertofore undiscovered atomic level of precision and equality, lest gameplay be slightly thrown off. You know what, I personally wouldnt mind if we could get to test out a few of these such maps once a week. If it really is unbalanced, then oh well, one side will win and feedback can be given on the forums and the map tweaked or taken out of the rotation.
It just doesn't make sense that HTC has this great player community here and, for the most part, largely ignores its efforts.