@tehn
i don’t have any new observations other than things mentioned in greater detail in the earthsea thread on the old forum:
http://monome.org/community/discussion/18239/earthsea/p1
but here is an abbreviated version:
– ability to sync to external clock. that is a big one for me! (in the old thread you mentioned a possibility of a “tiny extension module” is that still an option, or was that set aside based on other ideas?) (how the module reacts to the incoming clock could be user defined as well (only sync when in pattern mode, trigger each nite in pattern, or playback of entire pattern sequence, etc.)
– in the absence of external sync, the ability to adjust the tempo of playback more accurately would be useful. instead of doubling and/or halfing the current speed. maybe additional up/down keys that make tiny speed adjustments while the other hand holds the triangle up/down configuration?
– ability to save user defined visual “hints” for scales or keynlayouts (huge in my book! 
– ability to determine the behavior of notes that in pattern playback “breach” the edge of the grid (for example: the current “stay on edge” behavior, the Polygome shift to the opposite side of grid, or play the “right” notes in the phantom grid area, etc.)
– ability to toggle “linearize” function, or:
– ability to undo last “gesture”
other issues:
– the pattern playback gets stuck when accelerated to really fast speeds
– the tempo breaks down when patterns are being transposed while playing
this is a lot, but each one of these ideas came from exploring the module in use, and in relation to the other monome modules, as a way of expanding the capabilities of the whole line.
hopefully this is helpful in some small way.
p.