Default size of Mixer window should accommodate instrument list

Depending on the instruments, the Mixer window can be too small by default - sometimes Solo, Mute and drumset are scrunched together as a result.

Can it be made to accommodate all, or most of the instruments as the screen size will allow vertically? If there's a small amount of instruments, the window would naturally be of a reasonable size (not taking up the entire screen). Horizontally it probably won't be as problematic (depending on instrument name).

Using MuseScore 1.1 (Pre-release) and 2.0 Nightly Build (4483) - Mac 10.6.8.