Would definately be a useful feature, especially while using different waveshapes on the osc.
Am doubtful tho, that anything will be added to this instrument, since its out of production now, there`s no point for Sequential investing time into it any further.
For me it comes down to improvise with the features and modulation possibilities you have at hand.
Trying to replicate functions or sounds of other synths is fun at first, but to me it made the pro2 feel more like a tool and less then a instrument in itself. Up to preference it can be used as both of course. I just start liking it more as an completely individual instrument.
To achieve the 2note paraphony you could try splitting the oscillators onto the filters, while regulating the cutoff via aftertouch/velocity/modwheel cutting voices/osc in and out at certain frequencies.
I think with dc offset to note number modulating osc lvl`s 1&2 u can emulate a split keyboard effect, where the higher register plays 4 voices and the lower only 2.
The 16 modulation sources give you an enourmos amount of performative control.
cheers