Have you discovered synchronous resize fillet yet? (If you’re importing from Rhino, you may need to use the Optimize tool first for it to recognize the fillets as blends.)
I wouldn’t hold my breath for any of those tools in Rhino, unfortunately.
There’s actually a mode in NX to work completely “unparametric” (ie without history) and Siemens attempted to remove it in a recent version update, and the backlash was so severe they had to reinstate it in the next version! 