You don't mention say what you like specifically about Debian, most of what you wrote could be said for a lot of distributions.
So here is what I _don't_ like about Debian :-)
- I don't like Debian package tooling (dpkg, debootstrap, de build...). Actually I hate everything about the experience of Debian packaging. Every time I package for Debian, I end up with a messed up setup of chroots and have to make triple sure nothing leaked from my environment.
- Debian has a habit of repackaging everything at their own sauce, disregarding upstream philosophy. Debian packages will have their own microcosm of configuration directories, defaults, paths, etc. orthogonal to what a pristine installation look like.
- Debian has the annoying habit of default starting installed services. So you always have to dance around your configuration management to disable services, install them, configure them, then restart them.