Well, the writing is on the wall. There was a limitation that "experimentals" were not allowed to fly over built-up areas, but this limit has recently been removed, at least here in NL.
I don't see any fundamental reason why the Night/IFR restriction could not be lifted somewhere in the future, other than bureaucratic inertia. (And subject to reasonable requirements of course, with regards to lights, FM immune radios, nav equipment and so forth.)