Obviously, Qataris completing a full takeover would create a powerhouse out of United it once was, if not even more frightening. But, that looks unlikely now, Joel and Avram have won somehow over the other 4 siblings.
Jimmy Brexit will stop the next, midtable irrelevancy of the Glazer Apocalypse(which is where we are heading if Glazers remain with total control) and he will keep the club fighting for top 4, but not anything more than that. Forget about winning titles, we will truly become the new Spurs - desperate(as Roy Keane said).