i might make a devmode version that has some of this in the far future. but it's not a priority before API stabilization, perf optimization, code golfing, tests, docs, examples and v1.
if anyone wants to contribute this, i would certainly entertain a PR, but no one is paying me to write extra code (or any code, really).
Keras is great about error message[1] and it's part of what makes Keras beloved (and heavily contributed to).
[1] https://blog.keras.io/user-experience-design-for-apis.html
i write open source code primarily for myself. doing anything i dont consider critical takes the joy out of doing it.
if people want features, they can fork and contribute code and then maintain that code, too...forever. of course, once you shift that burden to them, suddenly no one wants to get involved.
sorry for putting it this bluntly but it's the truth. i am one human, with a 9-5 and a life outside of coding. people seem to feel entitled to opinions on free open-source projects having contributed little-to-nothing.
i typically add them (or update the docs) once users encounter problems and open Github issues (reactively). doing it proactively is a waste of time (for me).
i accept the criticism. i just don't have the necessary free cycles to address it.
Fair enough, I understand the mentality, it's not easy developing and maintaining packages in your spare time...
But it's important to remember that thousands of hours of frustrated google searches:
'error: something not found'
And don't forget about support requests posted to the "issues" in the repo itself.
Ultimately spending an hour writing helpful errors can save you hundred of hours in support.
Of course you can just ignore everybody asking for help, but then if people aren't going to be able to use your project why make it open-source in the first place?
I love it! Having fun with your project is key :)