My guess is that the revisit levels were an executive choice rather than one made by the dev team. Mania will be great, no doubt, but I guess the SEGA execs were afraid to do a 2D Sonic without forcing some nostalgia stuff on the devs.
e x a c t l y and it’s fucking stupid as all hell. it was great in 2011 when we hadn’t seen classic sonic since the 90’s (sonic genesis notwithstanding) but now?? we’ve got generations, the mobile ports, mania. no one’s starving for classic sonic nostalgia, let the classic formula work on it’s own like it literally always has