Can we have RPN back?

[Tugdual]

You know, the kind of things I also miss on the Prime, on top of a decent RPN (and RPL though I have to admit that 90% of my RPL programs can easily be replaced by a simple function on the Prime, but I digress ) I miss something as simple as STO 0 and then later RCL 0. I still don't get it how impractical it is to simply store and recall a value.
So we now have Shift Sto Alpha A instead of a straightforward STO 0 in textbook mode.
In RPN I still didn't figure out how to store something...
Another extremely basic thing that I miss badly is the Delta % key. Was sooo practical and easy so let's remove the key.
Seriously HP...