Thanks. So here are the points for D according to the table. Very few breaking changes because language is pretty mature. Not sure if Nim is as stable but just this one fact is enough for me personally.

D has slices, ranges and lazy evaluation which is a joy when you do data number crunching. Nim does not have them.

Also no mention of dpp in a table is surprising tbo.

D PRs take time mostly because they go through a rigorous community review. And by that I mean your PR does need to hit the quality bar. Which is only good and does not make a language a sandbox of community features like C++. See the PR for macros in D and why it didn't happen. Another reason is the lack of people of course.