Band registry with 3 registers for cw, digital/Rtty and SSB selections for each band with qrg, filter, dsp, etc. persistence. such as used by ICOM and other mfgrs for easy switch to other setups simply by clicking on the same band again to step through the registries. Not seen this suggestion but find this capability great on my IC7600 xcvr and would be great on flex 6000 xcvrs.
This was the only post I could find in the community about bandstacking registers. I am in agreement. When I come back to 20m (for example), it's almost never to the same mode, or band segment I was in before. So, a whole lot of "fiddly" stuff to do to get where I want to be. It would be nice if I could just click on the "20" band button 3 or 4 times to cycle through the last freq/mode for each of those. I'm used to 4 BSR's on my Orion, and I used them on each band for CW, PSK, RTTY, and SSB segments. Yes, if there were 3, then I'd probably combine the PSK and RTTY since there doesn't appear to be the concept of FSK on the FLEX-6500. But I'd still need to swap sidebands too... Anyway, just adding my vote to the above ones. Because I switch bands a lot, this would be very helpful to me.