Second (or assignable to other tracks) LFO would really open up the modulation and sonic potential.
Most of all would really, really, really like to see an alternative to the 120 steps for sample start/end points. Possibly a global option to enter free edit and use the sample page start/end encoders to move through all the sample points. Or a second tap on sample button to enter a second/advanced page for this purpose (independent loop start/end). Waveform view not essential, but nice if the one used for sampling page could be repurposed.
Finally, per track scaling. Obviously!