I was considering a boomy team for WoD, but the new eclipse system seems a bit wonky for boxing purposes. As a single member of the group, I'd say they are still OK, but require some attention to maximize their potential.

As just a single member of a mixed team, I would probably end up ignoring the eclipse system outside of tracking whether or not I should be spamming Wrath or Starfire. With the loss of stat snapshotting, dots need only be kept up and take very little focus, where as before it was important to make sure you were getting the most out of them. Granted you might want notifications on hitting Lunar for better Starfalls, etc...

If running more than one boomkin, the only way to reliably sync would indeed be with Astral Communion, which could be Glyphed to make it castable while moving. Unless one of your toons gets a full half-cycle off sync, this should be easy enough.