The control surfaces Ive found so far that support Mackie Control are:
Behringer BCF2000 *
Yamaha 01x
M-Audio Projectmix I/O
* = the Behringer doesnt really appeal to me as it lacks a “real” LCD-display, showing track/mixer parameters. The Mackie Universal Control is the most appealing to me since it holds both time- as well as parameter LCD-displays. Unfortunately though, they have removed the standard MCU and now currently only offer the PRO-version. Both this as well as the Yamaha 01x and M-audio Projectmix are a bit on the costly side though.
I’ll let you know whatever else I can find out.