Glad you're enjoying it! We've been waiting for summer to come along so people could start enjoying our cumulonimbus and towering cumulus effects.
We do have a few performance enhancements and minor bug fixes queued up here for the next release of SMP. The main thing we're waiting on is for Laminar to make some fixes to how VR works with 3D plugins such as ours - we'd like our next update to be VR-ready, but we're dependent on some changes in X-Plane itself before we can do that.