The current Sonic games have lost all that energy and style that they once had. Alot of SEGA game have arcadish features in them that they inherited from the companies history.
Sonic lost all of it aside from rankings, which are easy as **** to get now. In forces you can just get a S rank by hoping on 5 enemies and collecting 50 rings.
In Adventure 2 you get a A-rank by chaining enemy kills, timing tricks on rails, collecting and surviving the stage with a ton of rings, taking risky shortcuts, finding item boxes, finding gold enemies, getting a good time, etc. Y'know stuff thats made to make player take advantage of sonic and friends abilities and explore the stage.
What people actually want from a sonic game.
I assume most people are unaware of all the risky shortcuts you can take on in SA2. The level design was built for doing stuff like this.
There's spring under bridge in Radical Highway that lets you skip the entire bridge part by taking the risk of spin dashing off the platform and getting high enough speed to reach it.
@1:02
there's also the shortcut in Crazy Gadget that lets you skip the entire puzzle section near the end.