+1 for me as well

For full disclosure, I use RealTracks 100% of the time, no MIDI in BIAB. Any midi stuff I do, I do in Logic.
There are many, many times (well over 50% of the songs I work up) that I need or want more than 7 RealTracks on. Here's an example

Drums
Bass
Acoustic strum
Acoustic fingerpick
Piano
Organ or synth
Electric guitar
Pedal Steel
Fiddle

There's 9 in a typical configuration that I use.

I'm fully aware (before someone replies with the 'work-around') that there are options for doing this, but having even 10 tracks available would allow me to not have to resort to work-arounds.....which is sort of the point of it being on the wish-list. I have no idea how feasible/possible it is, just would like to have it.

http://www.rogerbrownsongs.com
http://www.nashvillesongwriters.com/roger-brown