Though, I am deeply plunged in sin, and the last thing I would like is to criticise other people's tastes, I find that you really miss a lot if you play thermo without air and hills. In fact I would like to play in maps where your base may be vulnerable from above the hill.. Not necessarily thermo, the only defect of which imo, is the huge corridor in the middle and the huge hills that inhibit mobility; no fantasy at all.
Anyway , I think that if no script twists the default rules in thermo, it should be ranked. I could understand the ban ,though, if such scripts are hard to find and disable. A twisting of the rating system exists one way or another nevertheless. There are people that enjoy ridiculously high ratings with a ridiculous lack of variety in the maps they play(I am no Saint, I have abused this fact myself; Isis anyone?
)
I hate to repeat simple truths, but someone has to do it.
The opposite is true; there are players with negative ratings(for whatever reason) that are anything but noobs. A match with such a player could ruin the playing experience of true noobs.
Another truth is the sick attempt by some to distort the true spiritt of SupCom, by introducing in a sneaky way maps that bypass the default rules of the game. An unranking of thermo as punishment for such behavior though not according to my way of thinking, is understandable.
An extreme, though maybe effective and easy to implement way to deal with the above problems, is unranking every game that is not ladder, as a first step. One could also go on increasing the variety of the ladder maps, or introduce a 2v2 ladder if there's spare time willingness and knowledge.