Hazel here, might have seen me around as Reem. My experience as a new player learning engineering generally and atmospherics specifically over the last month is in agreement with these points. Engineering as a department has a *lot* of ground to cover and I've barely scratched it so far, I'll often get called out to fix telecommunications, hack a machine I don't even know what it does, something else I've not even considered I'd need to learn before then. I'd be more comfortable as an Atmospheric Technician knowing that I'm only expected to be good at a particular sphere and that I can learn the rest piecemeal with different roles.
On note of thrusters, there's a lot of confusion on them that I think would be helped if cold phoron injection was more emphasized for engineers playing in for the absence of an atmospherics tech, like other atmos techs have said here. Fixing the wiki so that it no longer recommends poorly optimised setups would be a good start, and also, I might actually suggest allowing total thrust to be actually viewed from propulsion and not just from the bridge somehow. It might be useful to actually get a reading on how good the configuration is locally so you don't need to pester bridge crew or command to let you at the thruster console upstairs, or play on a private server to test it, particularly when you're teaching other technicians new methods in which total thrust and efficiency are a big deal. This may also help people learn to avoid outdated thruster configurations, as they'll actually be able to view why it's bad themselves.