I really respect that the Sonic 8 seems to go for the OG releases of most of the games. Sonic 1 without a spindash Sonic 2 without the elemental shields Sonic 3 without Mania effects / Drop Dash but then Sonic CD is using the 2011 remake instead of CD93, and that's like an odd man out.

I believe I understand the reasoning behind the choice, it's a quality of life improvement over the general CD93 fps drops, spindash, etc. But CD11 also introduces a ton of jank (such as RNG Wacky Workbench cycles or CC jumps you can no longer make) and breaks routes all over the place. (much like Sonic 3 Origins)

Sonic CD Restored fixes all of these things and provides a glitchless CD93 experience. It doesn't add Game Genie codes like Flight Cancel or things from other Sonic games like Elemental Shields. It changes the Time Warp timer to closer match CD96 / Gems, which had changed the warp timer to account for the game being played in 60fps.

Sonic CD is the fastest Classic Sonic game; both in terms of movement speed and the RTA of the glitchless category, so I'd feel it would behoove the Sonic 8 to run the version of the game that's most faithful to the original. (if not the original itself)

Examples of stages that will benefit from this: PP1: https://www.speedrun.com/scd_restored/run/y96ggwey CC3: https://www.speedrun.com/scd_restored/run/y6o9exqy TT1: https://www.speedrun.com/scd_restored/run/y6x4g9py WW1: https://www.speedrun.com/scd_restored/run/z07xx18y

CC2's Any% strat; the opening jump is something you can do in CD93, that is broken in CD11:

The choice is simply the people that were doing the runs were doing it on that version if you can get a few people to do runs with CD 93 it can also be added i am sure but there is no runs of it currently