As a Product Manager, I would like be able to capture feature estimates without having the release capacity feature. I don't track capacity at the release level -- at least not in the way Aha! seems to work today. I manage my capacity across all products and releases en masse. I do not set capacity for each individual release because we have multiple releases going on simultaneously. The work around is to either be under- or over-capacity by assigning an arbitrary capacity to the corresponding releases. Not a show-stopper, but it would be nice to suppress the release capacity while keeping my feature estimates, but it appears they only travel together.
Adding a comment here in hopes of raising visibility of this idea. I'm reminded of this daily when I look at my Features Board. I'd love to be able to turn off capacity planning and time tracking so that I don't see the non-sensical capacity bars but then I also won't be able to capture estimates at the record level. I hope you're willing to revisit this idea soon.