To be clear on the first end of things, I will be 100% (this has nothing to do from earlier btw)
I do feel like you would be a good staff member on the front end of things. Meaning I feel that your maturity level can be great and over time, would be even better in the sense of how you handle situations. In staff, they don't look for people who can be overly provoked, more over they look for people who can be really good with other people and be willing to listen to everything that someone has to say, including multiple people. As for question 15, try to be a little more elaborate in terms of specifics. Try to explain why you'd want the position rather why you feel that you should have it. Also make it 150 words.
Question 16 is a little different. It ranges in all forms of answers. At first glance, it seems like you wouldn't care (not saying you wouldn't care in general, it's just a first impression type thing), but afterwards you move in the right direction. I personally wouldn't mute someone, but each to their own. 10,000 second minges need to be handed out in the event of something like this, so keep that in mind. With you having short term memory loss, keep in mind that everything needs to be remembered up front and it stays for long term. So, IF accepted, you need to be trained thoroughly enough to remember everything. Hands on would be your best approach (you even said so yourself).
Also, you forgot a poll. I would keep those in mind if this does get denied. If accepted, then make sure everything is followed as stated.