Innocuous Researcher has two powerful effects
In blue, you gain access to repeating tappers such as Narcolepsy and Ghostly Touch
If the target creature is already tapped as the ability resolves, you'll still put three stun counters on it, and if you control it, you'll still draw two cards
Pairing Kumano with haste creatures essentially turns it into dealing 2 damage instead of one which is a big deal for an aggressive deck
With lifelink, evasion, and bloodthirsty abilities, Vampires excel at draining the life force of their adversaries while bolstering their own ranks
There are no cheap Moanas yet though, so you aren't going to be shifting her on curve unless you are playing Morph - Space Goo