The problem with the RPO is you would need a whole lotta licensing to make it work. It’s really just pandering to nostalgia and you need that to make it remotely work. Again, I just don’t see anything in the book lending itself to a ride. It’s just a kid doing random crap and then a big ending.
You can have a RPO attraction without him, and I like the idea of OASIS and we have to take part in finding something useful This is Spielberg's first major blockbuster movie since 10 years ago and a major stand-alone blockbuster movie since War of the Worlds. I agree with you on the licensing though, that's another major issue, but given how Universal operates by relying on 3rd party IPs nowadays for major attractions (as much I rather prefer Universal using its own) but I wouldn't try and rule it out.
I find it funny that people talk about this attraction and glasses being the dealbreaker when that's a huge part of the actual movie...putting on VR goggles
I just really hope it would fit with AR technology (which was also going to be used for MK) instead of VR while heavily relying on practical sets. There are far too much screen rides at Universal Studios theme parks than you would have for practical effects and that's pretty much overkill.