its been like over a month and only one run has been submitted. Im not saying you should remove it but maybe it should be considered.
If them being DE maps is the reason. We should add single player maps that were submitted to mineplex as DE maps.
There isn't really a reason to remove them as CraftainJ states. As they may not be very popular, it would still be deleting official DE maps, which would be the same as getting rid of skylands or through hell.
As to maximooch, as far as I can understand what you are saying, maps that were made for DE on Mineplex, we should add in because they are DE maps. That is nonsensical for a simple reason, that being that they aren't official maps that have been imported onto the Mineplex Network. While PC and PE DE maps ARE official maps that have been imported to the Mineplex Network.
Maps that are officially on Mineplex are the only ones on the leaderboard, which includes PE maps since they are official maps.