I am missing fixes and ipv6 mostly. Otherwise I am quite happy.
Note: we use third party provider for DNS and emails. So these features I've never tried.
I really hate the controling of strong pass logic. I have lastpass generate 32 characters but I HAVE TO PUT special character there, cause without it, it can't be strong pass - really annoying.
There is like 50 % that one click login will not work, issues with connect to phpmyadmin with one click, no refresh persistent logic when impersonating user, no search in packages, limited and different listing logic all over the app, no save states in my profile (e.g. always show addons in listing) and much more or backups states are basically just a guessing if they are being created or not (and upon refresh no state is shown).
There is also quite few features missing in API. And in some cases the API version of features are behaving differently. Also I've never understood the logic how to login to API (I've never seen this kind of implementation that enhance has).