My guess for the best of both worlds would be the FP90 with a BK7M module or maybe module from Kentron. If you need more editing, midi zones, etc then the 2000 with a module would be a great setup.
I agree that when the manufactuers come up with a hybrid they don't put the best they have in the keyboards.
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Bill in SC --- Roland BK9 (2) Roland BK7M, Roland PK5 Pedals, Roland FP90, Roland CM30 (2), JBL Eon Ones (2) JBL 610 Monitor, Behringer Sub, EV mics, Apple iPad (2) Behringer DJ mixer