I am not too sure on how the automatch system determines the map that you get while playing ranked, but getting the 5x5 km maps seems to be too often (in my case sometimes getting it 2 or 3 games in a row), and 25% of all of my ranked games are all on Esgaroth's Ruins (and Williamson's Bridge on previous rotation).
Would there be a way for the system to automatch the 10x10 km maps more often? The 5x5 km maps are really boring and getting it so often only means that games are won or lost based mostly on luck (because there is no time to react and counter to a superior strategy). I think that ranked games are more enjoyable on the bigger maps and I have not gotten a 20x20 km map in quite awhile either.
The 5x5 km maps should only be automatched on about 1 or 2 times in 10 games?