Tim, I think we will find the G-70 is already a legitimate arranger workstation..with a real sequencer, and expansion boards..You can edit tones[even the G1000 does this], including filters, LFO's etc....The only thing it lacks is a sampler[big deal!!], with the expansion boards from Roland...sampling is foolish..you can never come up with the quality the boards offer..

I think the real story..the workstation synths have to upgrade to the standards of arrangers..They are the lacking instruments, not the top arrangers..