don't think that's a bad idea. probably any decent web framework just with html/css would probably be fine. http://terminus.i2p does this with php/html/css, it's source is on http://git.simp.i2p/fuzzykitten/dev_endboard. i've used flask a lot for some things like http://git.simp.i2p/simp/i2music. there's a rust based wsgi/asgi server granian that offers better performance over the normal gunicorn/uvicorn, also some good web frameworks in rust too though not as mature as many of the standard options. there's vulnerability scanners active in i2p even if you don't publish it to a registrar just to keep in mind, i'm always a little concerned about which endpoints are exposed and how they'd be abused