I'm being realistic rather than optimistic. Chances are, the planetary landings will be nothing more than you can do on a station. I doubt they will enable us to walk around on the planet itself outside of the confines of the starport. To allow movement outside the starport would take considerable memory space on their servers hard disks. Imagine thousands of planets, each with their own eco systems, flora and fauna etc. To procedurally generate such a thing would mean no consistency, that means trees and other objects, even land masses would be in different places and different shapes each time you visit. What about towns and villages? All those working at the spaceport wouldn't live in the spaceport. It really would be far too much data, even for a server. Also, how far can you travel away from the starport? If you suddenly hit an invisible barrier, that would really add to immersionBe realistic, it will be a station with open air above you instead of another part of the station but that area is about all you'll be able to interact with.
Even in Frontier, it was procedurally generated. If you landed on a planet to put down a static mining platform, the terrain was different when you went back to pick up what it had mined. Back then, it was a novelty and graphics weren't that great anyway so immersion wasn't an issue. These days, players demand a little more consistency for immersion, especially with the cinema quality graphics we have now.
Big difference between random generation and procedural generation. What you describe is the former. Procedurally (or algorithmically) generated objects made from the same seed will be identical every time.