I have figured out using and loading templates on heroes/myself. Handy, that. There is not a way to combine that with choosing heroes, I presume? I frequently pass through solo missions or four-hero zones, to say nothing of changes for missions, and it can be tedious to re-select my heroes from what is now a long list. I would love to be able to click a few times and reload my default hero/build setup.
If that is not available, I hereby nominate it for a future update. Also, other games? If you give the player the option of choosing seven heroes from a list of twenty-seven, then giving each of them eight skills from a list of 1,235, that would be a good feature for you to have, too.