How many major exclusives does the Switch need to gain out each year to maintain popularity?

[AlfredoTurkey]

We should get at least 2 Metroid Primes, 2 Marios, 2 Zelda's, 2 Splatoons, 1 SSB and 2 Mario Karts before the 5-6 year cycle is up. Given that we've seen 1 Mario, Zelda, Splatoon and Mario Kart launch in 2017, if done right, they could stagger the next title out each year over 4 years. If you add in Metroid Prime and Smash, it gets even better.

Sprinkle in the B games like Kirby, Animal Crossing and Xenoblade etc... they should be alright.