I spent several hours today programming with the 1.5.3 beta upgrade.
 I found myself wishing the covered ranges for some parameters were more extreme:
 - High pass filter range doesn't allow the HPF to cut things out heavily
 - Filter envelope mod at 127 doesn't allow a nearly closed filter to go all the way open
 ...and so forth
 At least using NRPNs/CCs, I know we only have 128 steps of theoretical resolution, with (presumably) 0 and 127 reserved for minimum and maximum. I'd be willing to sacrifice some precision in the middle for greater range overall.