Nice, finally the thread is here!
I really enjoy Vendetta, but I can see where the "unbalanced" arguments are coming from. I think replacing Vendetta with AZAN's new version of Nord Town would be a great way to edit the map pool.
Frosty Battle is honestly not really a great map, but there would be one thing that would make it a lot better: if the flag between the outer ruin in ruins and the barrelhouse is moved to, for example, near that ruin on the other side of the map, the map would become a lot more interesting. I believe this is worth a try.
Also, Field by the River is a good map with the recent flag position change, so I would love it if it could be added to the tournament. I feel that most of the players that dislike it, dislike the fact that it is so open and thus heavily favours cav teams. I feel that the adaptability this map requires, is also an important skill that teams should be able to show to be able to claim that they are the best team in the world.