Cap will have a choice to stay in an alternate timeline or in the past of the current timeline (quantum realm wackiness will allow this hence the van from Wasp being in the trailer) he will end up choosing to stay with Peggy and in a time where he feels at home. He never really got used to the modern world.

Tony will die. He'll sacrifice himself for some reason but not before saving his adopted son Spidey and also finding out he has an unborn son with Pepper (who I think is still around).

I think what they could do with the next Phase of main films is jump them 15/20 years into the future so that Iron Man Jr can be a thing and maybe they can say that bringing people back from The Snap is what triggered the creation of human mutants thus bringing in the X-Men and other properties.

It will also let them continue to make side films with the current actors that fill in the gap of those 15/20 years.

It's a bit depressing to think that they could still be making these movies when I die but if they keep trying to push themselves in terms of quality and also bring in new and interesting directors then it could be alright.

A brief throw away sequence in which they have to rescue a young Barack Obama from a telepathic time travelling gorilla.

I think the Green Arrow and Superman will die in that crossover show. Green Arrow did a deal with the Monitor in part 3 of Elseworlds to keep supergirl and flash from dying. I think thats the price. Mainlu because 1. Its a good way to finjsh off Arrow tv show with Oliver Queens death and 2.They've confirmed that superman wont get his own tv show despite his many guest appearances in supergirl. 2 kryptonians on tv is too many