I would like to see the ability to edit beyond pattern boundaries, so you could zoom out in the automation view and then simply draw without the pattern boundaries. Same would be very nice for selections in the automation and also the pattern, so you could select over a pattern boundary.
The displaying already is programmed, but I understand that this would require quite a bunch of changes in the api (which at least I am ok with, if it leads to a better workflow). So I would like to suggest an song-line abstraction, which reflects the whole song lines (patterns in a row) as linear increasing number. So you would not have to fiddle around anymore at all with the boundary cases and the api would do this automatically. I think danoise already did similar in his API(?), but I would like to suggest this in the base API, also the obligatory way then to use it. I also would like to suggest the same for notes.