If you ditch internal memory then have 2 USB "to device" ports so we can leave a micro memory stick permanently installed (although with the internal hard disc this is less of an issue than it would be on my 3K)

And I'm still someone who hankers after 76 keys.. but I still can't afford it!!!

Can I add my vote to better leslie control, registration buttons in the middle, XLR mic connector.

XLR balanced outputs would also be good (although to be fair I've not actually had any issues with jacks)