You can have that today with Nim.
I felt like although it was similar to python. You can't underestimate the python's standard library features which I felt lacking. I am not sure if these were skill issues. Yes these are similar languages but I would still say that I really welcome a language like SPy too.
The funny thing is that I ended up architecting a really complicated solution to a simple problem in nim and I was proud of it and then I asked chatgpt thinking no way there can be anything simpler for it in nim and I found something that worked in 7-10 or 12* lines and my jaw dropped lol. Maybe chatgpt could be decent to learn nim imo or reading some nim books for sure but the packages environment etc. felt really brittle as well.
I think that there are good features of both nim and SPy and I welcome both personally.
If either/both are not "great enough" in some particulars you want, why not raise a github issue? (Or even better look into adding said particulars yourself? This is really the main way Python grew its ecosystem.)