Regarding map sizes, I'll just copy what I sent Cinth in a PM response:
The smaller map sizes really are more reflective of the original intent of the game (having that Risk-like feeling of always being near everybody). The reason I didn't have that before was because we needed big amounts of buffer space between players and other AIs in order to have the player not getting attacked constantly. Now with territories and incidents and so forth, that's no longer really a concern, so I get to go back to the original Risk-like intent. I hated how far away all the AIs were in the past, because I felt like I never saw them and had no reason to interact with them. But I can definitely understand how that's a huge change in feel. I imagine that having fewer AIs, and possibly custom map sizes, will be a thing in the future. Though to be warned, custom map sizes that are larger will run like a dog