It would be nice for there to be an emulation layer running as a process inside your favorite posix-based OS, such that RISC OS windows had equal billing with native OS windows, otherwise the RISC OS apps will always be at a disadvantage (whether that's actually a desirable situation is another discussion entirely).
That situation would be ideal for me, because then I could use my linux machine as my real primary machine without losing access to my Easiwriter docs. I think it would be a retrograde step for a significant minority of current RISC OS users though, at least in the short term. A modern Linux distro runs so much stuff in the background that something always goes wrong. And while it's easier to fix anything that it is to, oh I don't know - get RISC OS running on all the hardware currently supported by Linux/BSD/whatever, it's still a significant learning curve for newbies.
Note for anyone still reading: this discussion is well and truly off-topic, in case you hadn't noticed. It's got sweet FA to do with Jeffrey and others fantastic efforts towards getting RISC OS running on inexpensive, efficient hardware (or for that matter, any discussions of SMT or PMT or the actual feasibility of doing any of this).
It also broke Drobe's new threaded view at around 120 comments