Is there currently a known way to program/hack Shimano DI2 or Campy EPS so that it linearly steps thru each gear ratio instead of the user controlling the front and rear derailleur directly? Basically, adding a bit of logic to it. I would probably have the left two shift buttons move up in gear and the right buttons move down. With the inner buttons(thinking of Shimano) move a single gear and the outer buttons move in multi-shift. So nice although this is probably technically impossible due to mechanical limitations.

Personally, I like shifting to be as simple as possible and don't like thinking about when to move to the big ring, am I out of cogs on the rear cassette, which of these four buttons to press, etc. Part of the reason I currently ride a track bike for fun. However if this created a mechanical monstrosity even I wouldn't think it was worth it