I definitely want more storage, and will be using external disks with it.

This is a valid point, but I also want to keep it on macOS for the AirMessage apps. And it feels like the Intel Mac’s are all on life support right now. But a used Mini is much cheaper on eBay than a new one!

Thank you much, that’s my biggest worry.

My mid 2012 has been upgraded to the max. It’s got the 2.9GHz dual core i7, 16 GB RAM, 4 tb of storage thanks to a data doubler, and is running MacOS 14.4. I’ve been getting kernel panics lately, and sometimes struggle getting it to turn on, I’m afraid it’s getting time to retire it. It’s unfortunate, but this has been an outstanding laptop for me. I dual boot windows and macos on it. Perhaps I’ll put fedora on it shortly and see if it behaves any better.

As others have said, Inductive Automation 's Ignition is a fine SCADA platform that runs on Linux. I used it for years until my employer decided we should get rid of Ignition and use OSISoft Pi for data visualization. It’s a ridiculous idea, as they are different products with different use cases, but I lost that argument and have been told to drop it. Still salty, all those development hours and useful tools gone.