I have been playing sparraticly for several months, so Im not confident I *know* the exact current rotation, but here is the score....
We have 9 MA maps.
5 Large maps
4 Small maps
All 9 in rotation at once didnt work because players learn the rotation order, and start steam rolling some maps just to get to particular ones in the rotation. Players who's favorite maps were steam rolled complained.
One map a week caused complaints similar to yours. One large paired with one small worked ok for awhile until more maps were added. Then it became an issue of players not seeing their favorite map up in the MA for more than a months time.
If you can see a rotation that divides 9 maps into weekly rotations(which is divisible by 3), that equally uses 5 Large maps (which is a prime number), and also uses 4 small maps (divisible by 2), feel free to suggest it to Skuzzy.
With the history of the rotation issue, I think they are doing the best they can (mathmatically) with the number of maps avalible, and player feedback.