These screenshots show the current minimum size and the taller size (at 50%):

-- big pic: http://i.imgur.com/VW48X.png
-- only the Signal Graph Expands in height.
These screenshots show the current taller GUI and my suggestion (at 50%):

-- big pic: http://i.imgur.com/ZUOrB.png
-- the Band Editor and the Signal Graph expand in proportion.
The Band Editor does get taller if I set the Y Size to 150% but then the text gets taller too (and so to the knobs!).
