I am still a bit confused about systemd services, timers, units, targets and whatever but slowly getting there.
Also do you know how dbus activation would make sense, if it is already used in some ways and if it should be?
I think nearly all these services should run as user ones. I will fix their Wants entry and try to enable them again. Then see if some are dependencies of others, and the other way around on what they depend (like graphical.target, network-online.target, network.target etc).
Also I feel something with accessibility can be improved here, as orca and kaccess may be invoked intelligently (and otherwise dont bother users).