I saved up about 70 scouting tokens for the Saturday Silver missions and got Iron Fist to Level 30.
Got AoU Black Widow to level 29 and picked out my next leader: AoU Vision. But need research materials to get him to 20.
Got AoU Thor, also. He's at levl 9 and waiting for research materials.
Now up to 25 heroes.
Finished all the story tasks except for the Heroic ones.
Completed the first two missions on Chapter 1 on Heroic.
Still have enough silver to level up three of my level 29 heroes to 30 but I'm saving up until I get Vision to 20 and Thor to 19.