I haven't been keeping track. Is Tron CONFIRMED, "Confirmed," or is it just wishful thinking?
He's not wrong, they basically serve the same function. Imagine if you put Batman from Six Flags and Silver Bullet from Knott's right next to each other, but to make the newer one different you shot up the lift hill. That's basically what would be happening here.
And honestly, Tron is flashy and very Instagram-able but vastly overhyped. I'd like to think (may be delusional on my part, but bear with me) that there's some sort of depth to the Space Mountain experience, some nuance, mood, mystery, something more to it than people are expecting, despite its minimalism. Tron is exactly what it appears to be on the surface; no surprises, short, and bound to cause more accessibility issues than Space Mountain could ever dream of. And while I don't love everything going on in DL's Tomorrowland, there's no way to add it without permanently changing the feel of the area, and it's not a change that I think modern Disney is capable of pulling off effectively.