I would add the nice feature they have is package specific repos, so there is some control over updating.
I am running 12.2 (I have no time to upgrade currently...!) but I have been able to update various pieces of the system to keep tools working well (KDE+Libreoffice +Mozilla are the big ones).
Also, if you haven't used the Build service, check it out, it is very useful!! A bit clunky, but otherwise a really good way to build specific versions of software for multiple platforms