yep, that was my idea (despite i'm sure someone else complained about it). Increase the interval from 13 (should be around 12-13 now, i would increase to 17-18)
Right now couple of map are always played once respawn as 13th (Braundorf, Bremen, Aldernest, Depot, erdenberg etc)
The only reason i can think about it is that they are old (so everyone was used to play them ) / very easy to understand
There are so many other good maps that never get played just because people don't know what to do.
But it doesn't really requires that much to learn about it, it only needs to get used to play them