Lack of General MIDI support (and GM Drums) in Notion 4

Notion 4's lack of support for General MIDI is a genuine headache when creating Notion projects out of imported General MIDI scores. One reason for this is that Notion doesn't offer any out-of-the-box way to play back GM scores, and the second is that it doesn't offer any note conversion mechanism between GM drum note conventions and its own drum-score note conventions. A third problem is that the MIDI export feature of Notion is lazy when it comes to drums; attributed notes like open-hi hats export as closed hi-hats, even if they play properly in Notion as such. And a fourth, of course is that the instruments (and drums) provided by Notion are but a tiny subset of the full GM spec.
Now I've written to Tech Support about this a few times, and only heard crickets. I've since gone on to write some scripts in Cakewalk's .CAL language for SONAR to provide a bespoke level of drum note translation, but it's a clumsy solution at best. I'd like to hear some response from Notion Music as to where they stand on the issue of General MIDI and while they're at it, explain why these boards are so dead. I'm guessing that all of the company's resources are being spent on the iPad at present - but that doesn't explain the paucity of user group support on display here, where time seems to have stopped around the era of Notion 3.
Now I've written to Tech Support about this a few times, and only heard crickets. I've since gone on to write some scripts in Cakewalk's .CAL language for SONAR to provide a bespoke level of drum note translation, but it's a clumsy solution at best. I'd like to hear some response from Notion Music as to where they stand on the issue of General MIDI and while they're at it, explain why these boards are so dead. I'm guessing that all of the company's resources are being spent on the iPad at present - but that doesn't explain the paucity of user group support on display here, where time seems to have stopped around the era of Notion 3.