I think u should add like some extra questions for admin applications like they arent whole:
1. Do you have ts3 (headphones, microphone) admins should be more interessted in server which means that they need to help on ts3 also
2. How long are you playing on our server ? (Meaning how well are u known in our community)
3. Do you have any kick/bans ? (By that u can see are they polite or not are they swearing or insulting and also u can check their bans and see did they lie on topic and lower their chances of becoming admin)