So... I have no idea if this has been suggested before and I know it would entail a lot of work buuuuuttttt... Has the current FA staff team tried a multi tiered staff approach? I know it sounds weird to say it like that but hear me out. I do have some experience working with this system and it does work. I help moderate a 40k+ discord server, and while this doesn't translate 1 to 1 in terms of how things work elsewhere I find this system actually does a lot for a volunteer team and helps split the work pretty evenly.
Admins> Oversee bigger decisions and help iron out issues with how rules are understood and enacting bigger staff stuff, probably what they are doing now. Plus helping with Mod actions.
Mod> Oversee bans and ban appeals and issue warnings. They also help guide the hands of the staff below them.
The missing link (I'll call them Ambassadors)> This should be the backbone of your staff team, able to remove posts, and send users messages to inform them of light staff action. I'm not talking bans or warnings, but lighter offenses that doesn't need a harsh warning but a more gentle nudge to get their act together. They'll also bring up problems to Mod attention if something needs more experienced/harsher staff action.
I don't know how forum moderation works, but for our server we have a google docs that allows us to log people's accounts and their problems. Lighter offenses obviously don't need to be logged, but spewing insults over multiple comments may need a heavier approach. We've found it's best to give out corrective action than outright ban disruptive behavior, if people know they are doing the bad then they'll generally stop doing the bad.
This multi tiered system has many advantages, it allows for checks and balances on all levels, it allows for more accurate staff action, and it allows Mods to actually look at reports to see if other action is needed. It also allows new staff to work their way up the chain, knowing that the most senior and trusted staff are Mods and can be relied on if confused. This system also allows senior mods to delegate tasks or focus on more important issues instead of the tedious ones.
The disadvantages is integrating it into your current system. You wouldn't need to train current mods, just shift focus to hiring new staff and training them in a new approach.
FA, both the forum and image site, is huge and both need consistent and accurate moderation. I feel this system might help the current staff team and hopefully FA as a whole. If this idea is shot down in favor of your current system then I do understand, but if you'd like to know more of the inner workings then I could assist with more information if needed =3 Just reach out to me, I'm always lurking somewhere.
There is an existing hierarchy. It isn't apparent on the forums because the only two present staff on the forums are Luffy and I. Both of whom are team leads/administrators. On the main site we have numerous moderators who work on our respective teams. Eventually you'll see more over here.