Yes, when the R5ii is eventually released (late 2024 is my guess) existing R5 firmware caveats will be removed, but I would also expect significant changes e.g. a BSI stacked sensor of around 60MP, a new generation processor (possibly twin processors, if economically viable), focus-breathing correction, better IBIS, and a much faster burst rate (circa 40fps with electronic shutter).
Such a combination would enable hand-held stacking and merging with more accurate registration than is currently possible - due to minimal movement between frames. It could feasibly be used with images showing a modest amount of subject movement. These benefits could also be applied, with greater effectiveness to a hypothetical R7ii, as the latter would be capable of even faster burst rates that would virtually eliminate camera movement between frames.
Stacking and merging, in conjunction with AI, can enable higher DR, less noise, sharper images, more pleasing bokeh and numerous other benefits.