But at the same time I feel theres something people do not consider: how much terran actually relies on 1-2 base plays and constant harass to win their games. In my humble opinion terran is in an awkward spot with how most of their strengths come from early game situations. Bigger maps would greatly downplay these strengths. I'm a ~3000 masters terran myself, so I will try to explain this by using my general "gameplans", and I think most terrans would agree with them.
Gameplan going into TvZ: if positions are close, push with marines/bunkers to prevent FE to gain that early advantage. If its long distances, harass with banshee/hellions/marines to force units and prevent heavy droning. If you let the zerg drone freely, you are as good as dead. Keep up pressure and try to finish the game before the larva mechanism overwhelms you.
Its obvious that all of these general ideas will become weaker in a large map. The zerg will be able to get a FE without trouble. Any harass will take longer to arrive in the zerg base and thus be much weaker. Much of the early game stuff we terrans are forced to do against zerg will be either weaker or completely negated.
Gameplan going into TvP: if positions are close, early pushing and poking with MM might be beneficial. One of the many timing pushes with a raven can really punish a toss that goes FE. Once medivacs come into play, drop drop drop drop. Dont let them get too many colossi. Once both colossi and templar are out, it becomes extremely difficult to deal with the protoss deathball.
Once again when we shift towards macro games, terran gets the short end of the stick. Trying to end the game early will become very, very hard against a competent protoss. Dustin Browder himself at Blizzcon said that terran generally wins before the 15 minute mark, and protoss wins after it.
Personally I feel that the only matchup where I can go into full macro mode and still feel like I am perfectly fine is TvT.
So if we would suddenly change into bigger maps, I think one of two things would happen. Either terran players succesfully learn new ways to play the races strengths and a new era of terran play will emerge. Or alternatively terran be completely outmatched by stuff like creep, superior zerg mobility and warped-in units + stronger armies. I've heard some talk about this issue, but for the most time its not really touched upon, big maps are universally considered to be a good thing. Its almost like people feel terrans deserve to have their strong points taken away from them just because bigger maps are plain better, and because some the current maps favor terran.
Some people have said that things like multiple simultaneous drops and nukes will become increasingly powerful in big macro games, and I do agree with that. I just wonder if it is enough.
I dunno... Discuss.