As a proponent of both Nix and Bazel, unless you need them for a specific reason you should totally use Mise. I recommend Mise to everyone.
If everyone on your team gets Mise and you're starting to feel pain at the periphery then it can definitely make sense to adopt a more elaborate toolchain orchestrator.
All these positive reviews really makes me wonder. Maby I should use Mise. The creator looks like he's really in it. Starting it now might be a good option.