probably the idea is that they remove all their weak maps, let ACE keep bind and try to contest for the third map or try to win bind. Honestly SMBs ascend was really good, if they didn't choke on a few rounds I could see them moving to a third map.
Because Acend has been doing the same shit on bind for a whole year now, so teams believe that they cant beat them on bind, and its about time someone does force them off their comfort zone on that map