This looks great and congratulations on the alpha launch! Reminds me of another open source project in this space, NocoDB. Are you guys familiar with that project? If so, what are the main differences between them and what you are offering?
We've documented the differences between Mathesar and other similar products including NocoDB on the FAQ section[1] in our website.
[1] https://mathesar.org/faq.html#how-is-mathesar-different-from...
A feature to build interfaces for internal admin tools sounds very cool, and while we cannot say that it's coming for sure, we'll definitely be discussing it. Please feel free to open a feature request issue on our Github repo, we'd appreciate it.