Can we have RPN back?

[Cristian Arezzini]

(01-26-2014 05:42 PM)Thomas Radtke Wrote:  Stack lift on swap *does* work on e.g. the 48G, so I consider this to be a bug in the Prime, not its intended behaviour.

I think what's happening is that the swap key is "seen" as a SWAP only if there isn't any active editing going on, otherwise it's interpreted simply as the "default" comma key.
I'm wondering, is the comma ever needed in immediate calculations? I.e. if a future firmware will make SWAP act immediately even while editing, will this break something?