The expansion card system seems like something I would actually really like, especially as a hardware engineer. But the more I thought about it I couldn't really think of any compelling expansion cards that were worth the effort. So I figured I would look at what was in their store to see what other people thought up, and there isn't really any 3rd party store that I could find.

I did find this list: https://community.frame.work/t/list-of-company-or-individual...

According to it there are more 3rd party main boards than expansion cards. I kinda get it, but wow. End of an era I guess.