Can't specific examples be rehashes of past grievances? It hasn't changed much. The log is annoying and sometimes freezes while it compresses or something, for instance. That's old.
Various, but don't have time to rehash all of them - the following are just things that I was either bitten by fresh or constantly suffered from in last year:
- The utterly broken in places interface (one of the worst offenders is systemctl show non-existing-unit dumping you a screenful of systemd unit parameters instead of "this unit does not exist")
- Bonkers defaults the moment you step outside of the minimum case for new unit - spent ridiculous amount of time dealing with that trying to make a self-restarting service with sane values for restart timer etc.
- Lack of documentation resulting in having to read the source code (which is horrible code, IMO), which I can only figure as being result of built-in assumption that any resource consumed by systemd is exclusively for systemd use. Which causes problems sometimes (my specific case was totally undocumented values used by systemd secrets mechanism wrt to TPM2, which caused hard to diagnose errors)
