Now, somebody suggested that it would be big enough to be a 3v3 map, so I made a 3v3 version of it. I was kind of skeptical about the idea because initially I tried to create a layout where it is hard to lock down a significant portion of the map (at the time Brit Emplacement were generally considered cancer, so...). Players have to concentrate on the resources AND the cut-offs and also have reasonable chances to compete for both sides. So, you have to make decisions, really.
I am a noob when it comes to 2v2 and 3v3 play. But when I play a wide map such as 2v2 FOW, it starts to feel like a 1v1, not a team game. When I played 2v2 FOW, it always felt like a great 3v3 map to me. I even pushed for 4v4 because I like maximum carnage and mayhem.
SPECULATION:
I would guess many lower rank players like a grinding narrow map where team weapons work great. It gives you a lot of play options. And that is how you learn to play against the AI.
When I play team games I do not like to get separated too much from my team mate. If your team mate is too static or you are spread out, you will get overrun by two players and annihilated.
Many wide map games start with fuel rush and end with your fuel, one VP, and fighting on the middle VP. So if a map is too wide, it benefits you to focus on your closest fuel. Which leads to static games as teams dig in on their respective sides.
Maps that are very wide also feel like it takes forever to play a match. Steppes and Redball are both about the same distance base to base. But Steppes feels huge, games feel like they take forever, and you are so cutoff/alone that one bad engagement and you need to retreat everything for a few minutes. Minutes where you are not really playing anymore as your stuff gets back to the front. Redball you retreat a squad or two and your team mate is right there so you can try to stay and fight. To me it feels faster paced and more tactical. Steppes and General Mud are so large that the blob/retreat tactic is your only option. You cant hang around and fight with weak squads or play cat/mouse games. You will just get REKT. So immersion in the match is lost while you are rebuilding your army.
But you have your outliers. Some feel Redball is too narrow. Some feel that General Mud is too wide. But the map plays tell a story as to what most players like.