How about D3 introduce more “minions” for PvE so you can change up the events so it’s not the same old “Meet Rocket & Groot” Run #210.
Just introduce 4-8 more “minions” that D3 can swap out in the event. Thus having a “Meet R&G version A” (with one set of minions) and “Meet R&G version B” (with different ones mixed in).
The new minions don’t have to replace Muscle for Muscle, but could switch out one for instance. Like in Meet R&G, The Jugger+Muscle+Muscle node, you swap out one of the Muscles to something different.
My idea for different "minions:
Soldiers Group (Hammer/Shield)
APC (Armored Hull, Purple-Drops a Purple 3-Turn countdown counter, while out it takes 50% damage; Gatling Gun, Green, Deals XXX damage when countdown counter resolves) [replaces Soldier]
Helicopter (Flying Fast, Purple- Takes 75% less damage from Area affect attacks, Missile Lock-Red- Deals YYY damage when counter resolves). [Replaces Commander]
Maggia
Ganster Mobile (Stim Tabs-Yellow- Heals team by XXX damage; Open Fire-Blue- Deal YYY damage to the enemy team). [Replaces Muscle]
Mutants
Ultron Sentries
Ultron Hulk
Mindless
???
It would be something relatively simple (except the art) to do, any would improve the variety of the PvE play.