My SIMS5 includes most of the ideas above. Great stuff. Especially the multitude of WORLDS.
It also including: SIM CITY gameplay between worlds. A return to ideas like STREETS of SIMCITY. SIMCOPTER, SIMTOWER, SIMTOWN, SC SOCIETIES, SIMPLANET, SIMANT and even SPORE.
W.W. got it into our heads back in the day that one day we could have our SIMS living in our SIMCITY worlds. Then he hit us with STREETS and COPTER! We were on the way to the HOLY GRAIL of SIMS. And. That is what I hope for the future.
Everything the SIMS have been able to achieve in every iteration is mind-blowing and having those kinds of SIMS able to populate your SIMCITY worlds or use for driving, flying or any kind of action and adventure seems like SIMNERDVANA.