Let's say that you don't have any of these ninjas. How would you make the opening? As there are far too many options; let's list some of the first few basic options:

-3 Star Rin: Trouble for early game.

-3 Star Genma Shiranui: Cheap but useful savior of chase Infinite Illusion.

-80+ frags of your favorite seasonal ninja (other than Rin/Genma): Ay Third with his Teleport passive for example or Edo Tayuya with her good set, or that guy who fought Rock Lee with his version of 8 Gates for pure nostalgia reasons.

-30+30+30 (Triple Season ninja opening): They will remain at base but some of them are still enjoyable.

-Kurenai or Asuma: Like, why not?

Other suggestions, specific ideas, reasons are all welcome.