Some months ago I got a lot of new units I didn't have during the anniversary or WWC. So I checked my current Battlefield team of that time and saw a lot of new units weren't used there.

So I made a future proof team that mostly uses the 150/170% category leader skill instead of the 120% leader skill. I saw some posts about the difficulty of this one we have now. For me it wasn't that difficult, but I lost to Kid Goku and Piccolo. I had back up teams ready, thankfully my first team did enough damage those rounds. A lot of people don't have the units I use, but you can try and use the following if you have these:

Super AGL:
- Goku family Kamehameha (LR Ssj4 Goku Ssj Gohan)
- Pure saiyans (Ssjb Vegeta LR Kale and Caulifa)
- Fused fighters (Ssj Vegito LB Ssj4 Vegito)

Super TEQ:
- Powerful comeback (WT Goku Birdku)
- Random units (Teq Future Trunks Ssj4 FP Goku)

Super INT:
- Realm of Gods Mastered Evolution (Mui Goku Ssjb Goku/Vegeta)
- Super Saiyans (Nameku 3rd anniv LR Vegito)

Super STR:
- Super Saiyans (Nameku Goku/Gohan)
- Random units (1000 Days Goku Vegito Blue)

Super PHY:
- Pure Saiyans (Transforming Vegeta Godku)
- Kamehameha (Ssj Kid Goten and Trunks Random PHY lead)

For the Extreme units I would just use one team, and the best units you have, I use the extreme teams always the first 5 battles.
I hope this give you guys ideas. The first and strongest team is able to do minimal 80% of the HP of the boss, the second team should finish it.

Again, most of you guys don't have these units, but let's say you can make one team like mine, try to make the second team yourself with the units you have.

I don't plan to make a f2p guide, maybe JPHanta can show you their team.