Ask HN: How do you handle iOS app submissions?

I'm part of a small team and none of us really have any experience in a "solid" release workflow for iOS. The initial idea was to submit a build for Apple review every 2 weeks, but with the increase in review times we're almost looking at a build-up/queue of builds which isn't ideal. That's not even accounting for any bounce-backs/rejections Apple give us.

How do you all handle third-party "blockers"/Apple reviews as part of your day-to-day planning?