The issue for DM is that it is a very small community. Look at the number of aoe2.com. The number of players is just very small. This makes games sometimes one sided. The same will happen at Voobly or HD. You have pretty much two option: No game or some non balanced games.
I do agree the map pool is pretty weird for DM. I do think this must be changed. I made a thread some days ago to suggest maps for the current map pool. I hope that the devs will have a look at it. One of the statements i made was to add a seperate map pool for DM.
(Suggestions for new maps for map pool next month - #7 by WoodsierCorn696)
Note: I dont really play DM, so i cant really suggest good maps for DM.