I think pattern view, mixer etc. and spectrum/scope buttons should be moved to top next to transport control.
this would save some vertical space which would make sense these days when nearly all monitors are widescreen. If you have small screen 30px or so pixels wasted space makes a big difference, especially with trackers where things are moving downwards.
As much as I am for conservation of space (heh, just what I wrote in the other thread…), I don’t think that solution is such a good one. Central elements like these that you need to access continuously and usually with as little trouble as possible, should be positioned at edges of the screen (or corners, better yet) for easier and quicker access. And yes this is a researched and proven characteristic, they wouldn’t be as comfortable to access if positioned like suggested. Another problem I think is that positioning them there might require bumping up the (horizontal) resolution requirement.