I'm a ZBS client and I like it. The 3.0 version was a nice improvement and the software team is pretty friendly and helpful (Hi, Mike!).

I would prefer to not see this be absorbed into Jetpack in any way. I really didn't like how Automattic integrated with Woo (requiring a WordPress.com login and the dreaded Jetpack prompt on your site). I think it would be best all around if it stayed independent of the Jetpack system. There isn't anything missing in this plugin that JetPack is going to solve and I've always felt it's best to keep things clean and not introduce new complications. If people want JetPack, they can load it. But, many admins have their own ways of security, search, backups, etc, etc. JetPack is one option, it shouldn't be the only option or a forced option.

IMO, the best thing Automattic can do is just support this two man team with additional developers and support staff so they can get some breathing room to focus on their product.