I'm so excited to see where Oda is going with Kizaru. The arc started with the theme of being unable to control a person's instincts, which could be a sole foreshadowing to Kuma. But to Kizaru, a company man through and through, it could have some implications as well.
The inner turmoil he's feeling is so great. If he does end up betraying the WG, I want him to have a little more conflict with himself and Luffy first. This can't be a quickly made decision.