anybody else feel like after all this time, a cool feature would be dark mode? it could enroll more users who suffer with eyestrain or bright colors..even something as simple as changing the white background to black via scratch settings could change so much.

We have an ongoing discussion for a dark mode!

https://scratch.mit.edu/discuss/topic/217797/

We recommend you (and anyone else interested) post in it to show interest in the suggestion.