keyswitching is a function of the virtual instrument. putting a keyswitch on the midi track doesn't make sense because the map for the keyswitch is not necessarily the same for each VSTi.
the Control Bar can be customized with whatever controls you want on it and can be floated. so it is already available as a "floating transport"
I agree with the color mods request and the upgrade of the Staff/Notation views.
I suggest you stop using Firefox browser for this forum, or figure out how to hard code the carriage returns. I have a hard time reading your paragraph that's not broken up into separate ideas and when people do that, I tend to not read it. Just a suggestion.