Glad you're enjoying the synth, it's a nice little monster. I haven't added patching functionality yet primarily because the Newtonator (as you know) is an LV2 synth, and as such is surrounded by confusion, as is almost everything to do with the LV2 framework. Should patching functionality be the responsibility of the host or the plugin? Where should it store the patches? How should the host and plugin communicate patch data between each other? Etc, etc.
Until the answers to these questions become clear, I'm going to hold off on adding any kind of framework functionality. I do know that some hosts (like Ardour3) will persist plugin state, so you might want to check those out.
I'd be happy to hear any other suggestions you may have as well, and I'd be thrilled (thrilled!) to hear what you create with it. Have fun!