In R1C1 mode the column labelling is by number and the cell referencing is by R1C1 syntax _but_ the sort menu remains in A1 mode. I don't know about you but I find converting base 26 to base 10 in my head mildy challenging. It would be very nice if all the menus etc reflected the current mode. It would be very nice if it was easy to switch between modes (eg an R1C1 option box in the status bar) as they have their own merits.
I forgot to add - what would be very nice is a dual mode allowing both to be mixed and matched...
Repro Version: 7.2.0.0.alpha0+ (x64) Build ID: 4e3ce9dd6ace0b22f7b3f45cf2338b201f4dc305 CPU threads: 4; OS: Windows 10.0 Build 20180; UI render: default; VCL: win Locale: es-ES (es_ES); UI: en-US Calc: CL