We love to praise linux constantly and tell everyone to change to it (they should) but what are your biggest annoyances ?
Mine would be, installing software (made even more complex by flatpaks being added, among the 5 other ways there already were to install software) and probably wifi power management issues.
I hope image-based distro can solve this issue. In general I feel a lot of these breakages are caused by repeatedly migrating configuration files, yet fresh install usually fixes these issues.
I think one of the advantage of image based distros is that they are much more principled in migrating config files.