I will only talk about Setons because that is the only map I play. There are some players who are 1600 (Gilobot) who will absolutely NOT double base because they feel it weakens their micro and their eco efficiency. Gilobot would rather ctrl k his commander than manage two bases. I have trouble managing two bases as well. The only time your argument is relevant is when a 1200 inherits the base of a 500. The 1200 is still going to have less eco efficiency but their eco efficiency will still be better than the 500 when all is said and done.
You claim that Setons is just a map with 4 lanes that rarely interact with each other. This is bullshit. Beach should always walk to mid to scoop mass. The mid player should ALWAYS be making naval units by 15 minutes. And everybody should be making drops
or bombers or t2 fighter bombers or torps throughout the game.
If you are sad because you "Won your lane" on setons but your teammates lost then you are a moron. You don't get rating on setons by "winning your lane". You get rating by winning THE GAME. If your teammate is losing his lane don't just ctrl k and give up. Send him torp bombers or drop his opponent or build a nuke. Or God forbid you can even give him your own mexes or pgens if he is low on resources. This is a team game after all. You win or lose as a team.
You claim that suiciding your com as mid and gifting eco to your air player is a good strategy on setons. I don't think you understand the micro involved to build bases. The air player should be ctrl king their t2 mexes. They need to be scouting CONSTANTLY and watching their scouts as they pass over the enemy. They need to be watching for enemy transports, bombers, strats, and proxy bases. They need to scout for nukes, game ender, any upgrading cybran commanders (this could be telemazer).
You seem to think that air slot is a dummy slot that takes no skill. This is wrong. Remember what I said earlier. Front player needs to help beach. Well if you are air player and you inherited front base then you need to make navy to help beach because the other front player will be making navy to help his beach. Now you have to micro navy on top of managing two ecos.