Mark IV improvements that I would like:
1. Better Reverb ala LSC
2. Remove the Simul satellite outs to leave more room on Back panel for:
3. Separate Bass and Mid for Rythm 2
4. Slightly more gain on Rythm 2 or a crunch/gain switch like the Stilletto
5. EQ auto on/off switches for all three channels
6. Footswitch that can control all functions (yes, I know it would not attatch to the back panel anymore, but it is a pain to attatch the existing one anyway...)
7. Flat Front panel please
8. Beg EV to remake the original EV12L. according to R L. at Mesa, the classic EV does not sound like the older one.
MY .02.... 8)