The reason I feel they're rushing it is we've barely seen the multiverse at all a couple of flash season 2 episodes where we saw Earth 2 one scene in a season 3 episode where we saw Jay Garrick's Earth 3 we got Earth X/53 in last years crossover that hardly puts a dent in it when we haven't seen the earth of the Wildstorm heroes or Tom Strong or Kamandi. Heck we've never seen Earth 19 meaningfully depicted on screen or determined Black Lightning's place in the Arrowverse. it seems to me they should wait 4 years and let us see more of the multiverse before they destroy it.