The app has been updated now to support all enemies from the big expansions and the smaller enemy boxes.
They have it working relatively well so any imperial group will pick from any imperial unit you have models for and the scoundrels groups pull from scoundrel units you may have.
The one slight issue in the current setup is that there is a shared boss unit pool so you can end up with either an imperial or scoundrel unit. I presume they have done this due to the fact that there are a lack of scoundrel boss encounters in the initial campaign and they wouldn’t see the board otherwise. This did lead to a situation where in the first mission I was fighting off the imperials nicely when Jabba burst through the bushes with a unit of flying Storm Troopers as backup. Guess he heard that Han was on Yarvin
Hopefully we see a new campaign soon that takes advantage of the other tile sets and others more Scoundral encounters.