It would be interesting to understand better where language feature are actually needed or helpful, and where the code should be organized differently. I also observe that often cure if worse than the disease.

Many example I see where people argue for metaprogramming features are not all convincing to me. For example, there was recently a discussion about Zig comp-time. https://news.ycombinator.com/item?id=44208060 This is the Zig example: https://godbolt.org/z/1dacacfzc Here is the C code: https://godbolt.org/z/Wxo4vaohb

Or there was a recent example where someone wanted to give an example for C++ coroutines and showed pre-order tree traversal (which I can't find at the moment), but the C code using vec(node) IMHO was better: https://godbolt.org/z/sjbT453dM compared to the C++ coroutine version: https://godbolt.org/z/fnGzszf3j (from https://news.ycombinator.com/item?id=43831628 here). Edited to add source.