I liked the sound. And that's maybe the most important thing, because the great majority of FM synths at the market suffer from bad antialiasing which is so critical here. I also like the way the synth follow parameter automation. What needs to be done, as it seems to me, is some additional modulation features: more flexible velocity and CC parameter modulation, key position sensitivity, portamento and polyphony settings etc. - to make the sound more interactive and vivid. Hope it's in your plans :).
One more strange thing is high standby CPU load. It's even higher then with some voices on. Looks like some kind of bug (UPD: fixed in v 1.1! Thanx).
For some reason when I tried to download Microsoft marked it as a harmful file... of course I overrode that and downloaded the plugin. Windows 10 freaks out whenever you download a .exe fil so perhaps it would be better to put the download in a zip file.