Has allowing edit approvals on the mobile app been considered? I rarely use SE on my computer when I have free time (I'm usually working on something), so I rarely ever go through the edit approval queue. I wouldn't be surprised if that's not uncommon.
If I could do approvals on the app though, I could do a few while waiting for the bus, or while in the bathroom (might as well multitask).
I know I can go in through the website, but it's not very mobile/skinny screen friendly (and this is on a Note 4).