I guess I have different priorities. The score changing size doesn't bother me. But Pentatonic is still a very aesthetically displeasing font, even if it was made by Harmonix. It's like if Harmonix used an ugly dog for their mascot because he's the pet of one of the higher-ups. Actually, the ugly dog would still look better than Pentatonic.
Did you miss the thumbs-up icon in the thread title and the overall positivity?
Another bit of positivity: Simple pop songs are more fun to play here than on the instruments in the main RB games.