Every time this comes up, the answer is the same: who is going to do the work? Our Lead Developer already has his hands full with MX and the other flavors of antiX, and I lack time, talent and interest.A 'KDE' flavour of MX would be impractical to offer, alongside the existing xfce?
Yet this is not a monumental task, as the Community has everything it needs to do this work:
1) a choice of excellent releases of antiX to start with
2) a group of people who are knowledgeable about KDE
3) a tool (MX Snapshot or the antiX equivalent) for creating an ISO to distribute.
Only thing left to find is commitment and leadership.