I wrote a whole paragraph about what I want to see in the 2018 crossover between Flash and Supergirl and it all erased itself on his own... and now im too lazy to write it all again, so Im just going to say: I want to see more of the bromance btw Kara and Barry and see them being all goofy and funny as they fight a vilain or just as themselves: Kara Danvers and Barry Allen. Also, it would be really cool to see Winn and Cisco meet because they have so much in common and i think it would be really funny to just see them fanboying over lots of things.
Im not talking about Karamel or Westallen in my suggestion, because I think recently the shows focus to much on the 2 heros' love life and it would be great if they focused on just them and their superhero life.
But of course, that is just my opinion and I know not everyone agree with that, so no hate please:)
Anyway, that's all I had to say lol...
(I pratically rewrote my whole paragraph without realizing it lolol im stupid)