I would like to firstly talk about the in-game report system. I personally understand that as staff you also have a right to roleplay and have fun on the server but regardless of that, you have volunteered and put yourself out there to moderate the community. You placed responsibilities up on yourself and not the other way around. So I think that the 'disguise' ability should be used as a off-duty feature (Unless it is already) But that there should always be a on duty staff so if you're the only staff on the server then you have to be on duty.
Talking about AR/BD/WD/ect, as I mentioned it previously, you've placed these responsibilities up on yourself as you were the one to put your name out there, if you don't want these responsibilities then resign because there's many people who are capable and more than willing to take your position and make up for all the work some of the staff have not been doing. It's also why I personally think there should be a penalty system for the staff so if they are persistent in not doing their duties then they're off the team.
There needs to be something done about the current system to where it's satisfactory to the players instead of having this 50/50 about their requests, disputes and appeals as it's not fair on the players for them to have to wait a ridiculous amount of time when they were wronged, others have broken rules or they have changed for the better. As I said before, if you don't want to do some things as staff or it's 'getting too much' then resign and free up some spaces for the people who are going to do it.