Sorry for the delayed response. I apparently don't have email notifications set up. x.x
In any case, I have already made the modification on my player and it's working fine and much less ugly than the stock control config. On a positive point, the structure of mpegplayer has the controls for the menu and playback separate so the controls can be 'rotated' while playing a video and return to normal when going to the menu to change the plugin's settings.
I have posted the current patch I have here: http://www.rockbox.org/tracker/task/10210
It's for the Sansa e200v1 only and has no menu toggle so the change is permanent. The menu toggle (if anyone actually wants the feature. I don't care. The change is much better.
) would have to be added by someone with more programming skills than I. And the addition of more players can be freely added by anyone who owns them or just offer up a detailed explanation of the playback orientation of your player and how the controls are set up so I can patch them accordingly as well (of course, if those players need the change. Seems to be targets with portrait oriented LCDs here.).