Umbrella Academy where everything is the same (NOT) but Klaus took the bullet for Dave in Vietnam. Klaus comes back (not realizing he should, in fact, be VERY dead) to a Dave that is heartbroken and thinks he is dead, scares the shit out of him by reassuring that he is not in fact a part of the afterlife, and brings up the briefcase and bringing Dave back with him to 2019. Dave agrees and Klaus gets on track to being semi-sober with Dave's help.
Umbrella Academy where everything is the same (NOT) but Ben didn't check the tank and blew it up like he was supposed to. A world where he walked home from the mission and waited for Five to come back like Viktor did when he made Five nutfluff sandwiches every night.
Umbrella Academy where everything is the same (NOT) but Allison didn't rumor Claire and went to therapy and took deep breaths and didn't mess things up. A world where she kept her daughter and even if she and Patrick split she still was in good graces to spend time with her kid.
Umbrella Academy where everything is the same (NOT) but Diego got Patch's message in time and managed to make it to the hotel room to either help her deal with Hazel & Cha-Cha or he got there before her injuries were too far gone and he was able to save her. A world where he kept her safe.
Umbrella Academy where everything is the same (NOT) but Luther let Five do his job instead of threatening to drop Dolores out the window to keep Five from murdering people that might kick-start the apocalypse. A world where Luther understood where Five was coming from and didn't threaten to break the only thing that Five had learned to love.
Umbrella Academy where everything is the same (NOT) but someone found out Viktor had powers and helped get him off of his power-supressing meds and helped him figure out how to use them. A world where Viktor was helped rather than left to spiral into a mindless rage that would end the world.
Umbrella Academy where everything is the same (NOT) but Five learns about the subway before meeting the Handler and he learns potential outcomes and how best to solve the apocalypse. A world where he takes the Handler's deal but he breaks down the comission (or at least removes her from it, creep) and gets back to his family, and despite looking young he is alive, everyone is alive, and he checks the subway regularly (that he has made a map of) for potential oncoming threats. He learned at a young age during one of his subway explorations that he would inevitably kill Lila's parents, and he never does it, pretends to get the mission done so that his cover isn't blown before he goes home.
Umbrella Academy where everything turns out okay because Five utilized the subway, people listened to each other, and they didn't have poor timing. Umbrella Academy where things didn't hurt as bad. A "do-over", if you will. Like "The Day That Wasn't" episode.