Just because US got a streak of gst wins in the olden days this really doesn’t mean they can do the same now. Backthen I’m sure a very rare number of players knew how to spar properly so it’s not impressive for US to win gsts backthen. Another proof is the fact non of the old sparers with high ratio can get the same ratio in single spar now, not even close to it. US definitely has good members but i’m 100% sure if US is revived there is at least 2 teams from each idev and mixed gst who can beat them.
Give it another few years and watch a whole different era where every round in gst including round 1 are going to be hard matches for all teams. Which means new players and teams are going to rise.