Building on the stats provided by PAGEP (the legend) it appears Coh2 could use another map patch. 3v3 map pool needs work and the 4v4 pool seems to be getting more and more divided.
I dont think Relic has any plans for a map patch. But Coh2 could really use another one.
The bottom few maps should either be replaced or heavily reworked. Some have already been reworked. Since a 2nd patch is really pushing it, I would suggest removing the maps in case the rework does not improve the overall play numbers.
If Relic would commit we could maybe have a map contest type scenario. I know there are a ton of new mappers out there that could make some great 4v4 maps with some guidelines.