I have several plugins that hang notes usually while I'm jumping from on to another while holding a note on my controller and this is quickly fixed by going back hitting the note again and viola...however I have several plugins that will permanently hang no matter what I do, I'm certain this is actually the plugins issue and not one with Orion but I think it could be quickly fixed with a reset generator option which would allow me to keep all the note patterns intact without having to open a second instance and transfer all pat's over.
It would also benefit the preset tweaker who's gone a little too far to get back to where they belong when modifying a preset. Though as I get more and more versed in synthesis I'm finding the need for that less and less obvious.
And an expansion on this idea would allow someone to swap out generators easily. I like to do what I call Midi-Mask remixes on older songs of mine to try and freshen them up by simply introducing a new plugin that I didn't think to try in the first go around or one that may have just bought and discovered a sound I think better suits a part in a work in progress or even on of the midi-mask songs.
If there are simple work around's to the issues mentioned above please share them, I'd hate to see such a streamlined DAW like Orion become over bloated with 300 different options to do the same thing.