I can switch the role of the wheel by pressing wheel-right (BGMT_PRESS_RIGHT), say I can control Shutter speed or Aperture, on the plain Canon UI the box around the current selected variable for control has bright green corners, on ML it looks like the attached image, so you don't really know what will be controlled until you actually change it.
Also using Trash button for "ISO Speed" selection will reset the selected controlled role to Shutter speed if it was on Aperture previously ( same as on Canon menu), making things even worse.
Can the mode ( which setting is selected Shutter or Aperture ) be detected by ML and the correct text highlighted ( eg. different color ) ?
/PS: forum thread: http://www.magiclantern.fm/forum/index.php?topic=14801.0