I just hope that Sega isn't going to screw it up like they did with the modern Sonic games. But then again, I wouldn't really want to play Sonic 1 again. It's really tiring. There's a pretty big difference between reusing concepts in a level, and making the level incredibly repetitive. Sonic 1's levels were very repetitive. On the other hand, Sonic 2 and Sonic CD reused level concepts but the level layout was actually varied. I think it's partly because Sonic 1 used 256x256-sized level tiles instead of 128x128-sized level tiles like the later games did. It was also probably because of the lack of interesting level-specific objects. Knuckles Chaotix suffered from the same problem in most of its levels (except for Amazing Arena. That level had a decent amount of gizmos and gadgets, they just weren't reintroduced enough).