Board Thread:Questions and Answers/@comment-33273295-20171006170128/@comment-33728484-20171022174258

To be honest, I don't think you need them. They're good cards, but if you're going to use SSJ4 Goku as friend they're not going to benefit from his leader skill, which means that your team will have less HP as a whole, and they'll also be missing out on the stat boost and the +3 Ki.

I agree that SSB Vegeta doesn't support the rest of the team in his undokkaned form, though, so you can use Goten instead if you really want to, but I don't see why you would need him or AGL SSJ Goku, when you already have cards like Gotenks (+2 Ki to both SSJ4 Goku and Super Gogeta) or Bee Pan (+2 Ki to SSJ4 Goku through GT link, can heal and stun). SSJ4 Goku would already get +4 Ki from SSJ Goku GT, so as soon as you get the right rotations you could even put him in the middle slot and he'd always have a guaranteed super attack. Dokkan awakened Super Gogeta and SSJ3 Vegeta also give each other +4 Ki, so they'll also super attack all the time ;)

In the end it's your team, though, so feel free to test different options and see what you prefer.