Thanks for the feedback! I just pulled PHY Omega Shenron from the banner so I'm gonna see if I can throw him on the villain team you suggested. He links well with Zamasu and AGL Cell. I'll play around and see what I can come up with.
Actually, with PHY Omega Shenron you could also almost do a PHY team too. You have the bones for it, but only 4 really good cards.
Leader: Super Saiyan Goku (Angel) (Super Kaioken)
Omega Shenron
Full Power Frieza
Possessed Goten (once dokkaned)
Vegeta (the SR one - has Prodigies and Big Bad Bosses links)
Filler... maybe SR Nappa since he greatly lowers DEF
FRIEND: PHY Broly or SS Goku Kaioken
man Phase 4 Gogeta is fucking ROUGH
He hits like a goddamn freight train
Do you have any ATK lowering guys? Like, Super Baby 2 or Buuhan? They were what did it for me. By the 3rd or 4th phase, Gogeta didn't really hurt anymore and it was just a battle of attrition.
Here was my team, with LR Gohan friend. It could also be done (and possibly easier) with Buuhan friend due to metamorphosis and more atk/def lowering. Also, if you farmed any of those nurse medals from the new GT story event, now is a good time to use them. I used one on the first turn due to bad placement.