How does this work, if one person is sharing their screen, does the client get to see? Because it seems more like remote gaming kind of thing? Where the client controls the game/app running on the server?

Second the “Jump off that bridge when we get to it” sentiment.

Also IMHO: Don’t worry about it a whole lot. If it’s required you can “fix” a whole lot with just brute forcing better hardware and smaller performance tweaks. And if it really requires a major change, the short term fixes can buy the time to develop larger changes.

But as a pet project, just to get more experience and learn stuff. Sure go ahead, connect it to two databases with wildly different architectures. Why not do three? For learning stuff, doing something really weird often teaches a lot, even if the end result might not be very useful.

I keep a very sharp scalpel next to my printer. It’s super thin and a bit flexible, but still has a sturdy handle to hold on to. With it I can get in between the glass and the PETG no matter how stuck it is. Once I cut a little bit, usually the whole print lifts right away.