I hate to think that it might gain popularity with the Crowd trying to leave Twitter. I certainly don't plan on trying it. I have several friends that think Bluesky or Thread will be a good move after Twitter, but I can't see either option being good for the userbase long term.
I wouldn't change anything, I like fixing things as I go. Doing things right the first time is only nice when I know exactly what I'm doing!
That being said, in my current enviroment, I made a mistake when I discovered docker compose. I saw how wonderfully simply it made deployment and helped with version control and decided to dump every single service into one singular docker-compose.yaml. I would separate services next time into at least their relevant categories for ease of making changes later.
Better yet I would automate deployment with Ansible... But that's my next step in learning and I can fix both mistakes while I go next time!