I'm not aware of any developer who builds levels 10x bigger than what current consoles can actually handle. So that's definitely going to take more time and goes back to the problem I'm speaking of.
And having better toolsets doesn't matter if games aren't being made faster. Well, you could hypothetically create current gen games faster, but is that the standard you want on hardware more capable than that?
Why would level be 10 times bigger.... Not every game has to be gta for christ sake. Not every game has to be virtual life. That's this kind of thinking that kills budgets.
Assets are already high poly then downgraded anyway. And Square has been producing hours of cgi for its ff for ages now. Even in the ps1 era, i guess they had to modelize, texturize and render all those backgrounds...