There seems to be a misunderstanding by some that Disney Parks has its hands tied and is forced to give the space to DVC. That has not happened EPCOT but it is what happened at MK, so maybe it's understandable to conflate the two?
The EPCOT contract is renewed annually so Parks is free boot them out whenever and use the space. Disney threw up some drywall but the original ImageWorks space is back there, and the escalators are under some boxes in the lounge. But they will not happen. The original ImageWorks space was perfect for the type of dark space up there but we can see from guests now walking through ImageWorks, and also Project Tomorrow at Spaceship Earth, that there's just very little interest in these areas compared to their heyday. I personally love them and hope Disney does more, and the next generation of some of this was expected at the Play Pavillion but that has not gotten off the ground. So short of stripping down Play Pavillion ideas for a smaller space and putting it in the Imagination Pavillion, they're not touching the upper floor of Imagination.
If wanting to direct frustration a guest space being limited to DVC members then direct that to the future MK lounge.