My final node today, all 7* lvl 76 gear 9:
I (lvl 76) beat them with:
5* Maul lvl 68, G8 (L)
5* Vader lvl 64, G8
6* Rey lvl 72, G8
6* Lando lvl 64, G8
6* Fives lvl 69, G8
Only lost Rey and Lando, who were not at full health to begin with.
This is not even my B team. It's a throw together. Maybe it was just a good day...lol
Seriously, I don't doubt that some people have issues, but it doesn't need to be nerfed or fixed. It's all about how balanced your toons are and having enough.