Actually I really enjoy building in trem (besides the combat), although 1.1 vanilla is far more limiting in terms of what you can do strategically than in other game plays, Fortification is one of those maps where you can see a lot more variation and dynamics in game play even for 1.1 vanilla. ATCS, especially in 1.1 vanilla, almost always results in the same general base layouts/locations, and in 1.1 vanilla you rarely see much forwarding nor significant moving.
As a side note, this might be a bit off topic, but I personally don’t care at all about my score, I’m more interested in figuring out ways to strategically win, which can include strategic building, strategic killing, strategic rushes, and killing enemy buildables strategically. I can significantly contribute to winning the game with even a single digit kill score. But yeah, scoring should more accurately reflect this kind of game play, and forwarding/moving should be a lot more viable in the game play (requiring much less time/attention).