For my contribution to the ecosystem see Nexus mentioned in another comment. If you see bugs please report them. Sometimes libraries are deprecated/abandoned because of new ideas, this happens in every ecosystem.

I personally use camelCase/PascalCase, but Nim is style insensitive, meaning you can call procs written in camelCase using snake case. However this is controversial and under discussion, my personal opinion is to make style sensitivity optional, with insensitivity the default.

Ambiguous variable names I hate, you won't see that in Nexus, if anyone does they should file an issue. That's really developer dependent.

For my part Nexus has some docs and a basic tutorial. But if people want more they need to ask for it. Why write docs nobody wants or will read? Anyway, this book (Mastering Nim) is one more definite step forward for learning Nim.

I think compiling to C is what mostly happens, C++ is probably an outlier. Even then, a C++ compiler isn't difficult to install if needed.

For me missing libraries never stopped me, I could always port/wrap whatever I needed. However with the advent of AI assisted coding, working on libraries is even faster and at some point I hope I wouldn't spend much time rolling decent libraries that are ports of existing github projects.