It would be great if there were a way to create or load teams. Of course, the major teams would be a great start:
Freedom V
Freedom VI
Prime Wardens
Dark Watch
And then, if we could create our own custom teams and save them for later use. That would be awesome.
This would be cool for convenience's sake. Saved team setups so like if you want to play a specific list of characters you can just select the team instead of selecting them individually. A nifty QOL feature.
My impression is that they intend to do a lot of overhauling of the deck selection screen, to add features like individualized randomization, or randomization with a locked number of heroes. I like this idea as well, although there are a couple different ways to handle how you would decide hero order for the saved teams.
If it just put them in the lineup of selected heroes you could rearrange them before the start of the game.