Hundar, a workhorse typeface for general and specialist usage

Hi everyone, I hope you're all having a nice day!
I wanted to request feedback/critiques on a typeface project I've been working on, Hundar.
Sample Image
The project is very ambitious in that it hopes to provide an OFL-licensed workhorse typeface with optical sizes, an accompanying sans style, as well as support for a broad range of languages (including extensive Latin, Greek and Cyrillic support) + eventually also specialist usage (math, phonetics, medieval studies). Its design also makes use of modern/experimental ideas rather than following more traditional forms like transitional serifs and such.
I've attached below a proof focusing on [A-Z][a-z][0-9] (which I've recently redesigned) and one math document. Here:
- Kerning is "optical";
- The Bold and Italic styles in the math document are pretty experimental;
- The math font is a temporary placeholder.
- Ligatures are disabled for now (I first want to get the letter shapes finished to avoid generating extra work in having to keep editing the ligatures)
Would love to hear your thoughts on the typeface!

P.S. Here's the typeface website: https://hundartypeface.com/.
There's in particular a “Progress” tab where I'll be trying to keep track of roughly where the project is in regards to the initial release: https://hundartypeface.com/progress.html.