I don't think they have any choice the matter. The Drum Maps need to be scrapped and rewritten from scratch, and the piano roll need to be updated so it's more useable in this area (and less buggy). I also had really bad usability issues such as selecting inline notes in the inline piano roll into another track with a drum map for instance. it was nearly impossible (in fact I think it was)...
I would log a million issues about this with Cakewalk but I think they probably already know about it.
Anyways enough moaning at my end for one day!
I normally restrain myself but drum maps let's out my inner b itch.
Cheers!
Alex