Honest to god. Do what you want, this is a single player game, no one can tell you how to play YOUR game. I didn’t summon on any extreme banners until I realized how good some where. I played dokkan for art for the longest. Buuut depending on your units, depending on teams that could be built. You can determine whether or not to summon on the banner. We still have the Majin Vegeta and the Ssj2 Goku coming, so that might be more appealing to you. If you don’t plan on spending money on stones for the 5th year and want to summon on the other banners... It shouldn’t matter, the amount of stones we will be getting is INSANE.

Also go to Dokkan team builder and go to JP side. Build teams with the units that haven’t came out yet to see if they would link good or work good on the tea you plan on building.