What the titles said. Just curious if there are any major features not present in AAI Loaders, krastorio loaders, etc

Comfortable Compact

That's not really an answer. Especially now that the original mod (Deadlock's Stacking Beltboxes & Compact Loaders) you seem to have based this off of has been updated to work with Factorio 2.0. Can you please be more specific as to what changes you made other than updating the info.json file to mark this mod as compatible with Factorio 2.0 that would set this mod apart from existing mods that add the same functionality?

1 Compatible with 2.0
2 No compressor

Thanks for the info!