I have had multiple occasions where a page has been under a vandal attack, and no assistants were online. If I had assistant rights I could've protected the page.
As a Rollback, I always check other users' edits to make sure every single edit is following the Manual of Style. I also edit on this wiki everyday and always check the wiki activity when I am online.
Not as assistant, but I am currently a Rollback and Chat Moderator on this wiki.
I plan to edit protected pages, and protect pages when needed.
If this request is unsuccessful unlike most users I will wait awhile, then if I still need the rights I will request again.
Once again, my contributions as Rollback because I am always there to rollback pages and always use my rollback rights wisely.