Looks very cool, but I don't feel like I've had many problems with tool speed. Is this actually better than all of those listed tools in terms of features? I feel like I might just end up using all of them.
For me, the big win is having a single tool instead of a dozen - like when the last flake8 update happened we had to play plug-in Jenga until everything updated, you have different configuration files for flake8, isort, pyupgrade, pylint, bandit, etc. and inconsistent support for pyproject.toml or ignoring things, etc. None of that is a big problem but it’s nice for it just to be gone entirely.