Analogue-sequencer

> It would be really useful if you could have two kinds of control:
> 
> - Controlling a parameter for the currently selected pattern
> - Controlling a parameter for a specific pattern

You would need to get that by selecting which track a control was directed
to, with a fixed track number, or referenced by the current 'edit track'.
You'd need to consider how you address different bars of a pattern, varying
resolutions for aux values, etc.
 
> That way with a lots-of-knobs controller like a drehbank you 
> could set it up to make editing more conventient by gaining 
> "dedicated" knobs for pitch, vel, whatever, or you could get 
> the ability to tweak several running patterns at the same 
> time without switching.  Or a mix of the two even...

There is definitely a diminishing return with dedicated knobs - at some
point, you have to spend more time hunting for each control than it would
take just to switch view.
I think the Drehbank is at the limit for a usable number of controls.
That's especially true if you have use multiple banks. At least it is for my
brain.
But being able to map 4 rows of controls for note/velo/leng/delay in P3
edit, or a selection of the track values in play mode is on my list.

Cheers,
Colin