I remember when I finally had two B3's that I really liked, one for the studio and one for the road I was set for life. Many keyboards later I had 3 / G1000's, and thought oh boy, I'm done buying keyboards LOL !!!
I think the bigger question is this the end of OMB's as we know them ? If there's a demand for more Arrangers they will be made but I don't see it. And as you said if you really dig into any of the better ones out there they are really all you need.
Bill in SC --- Roland BK9 (2) Roland BK7M, Edirol 61, 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