Most players have their particular style of playing kinda "hardwired" into them.
I suspect you're right. Since beta tour 3 I've pretty much played the same. Some tours, like this last one, I'll be in GV's most the time, others I'll be in jabo or fighter mode. Just depends on what I feel like, it must suck to have to adjust ones gameplay in order to attain a high, or is it low, rank.
What about a whole month without scores? I bet that would change the gameplay a bit. It would be a fun experiment regardless of the outcome.