Lol I'm already hyped even though it's long term! Very motivating and useful to know it's on the cards (assuming all goes as planned!).
You can count on me as a tester for Linux! I found nwjs to be poor performing on Linux, despite investigating this and changing nvidia drivers around and such, yet same device booted into Windows, nwjs works perfectly fine.
But yes, if I'm understanding correctly, this makes it a unified plugin system for all 3 desktop builds? If so, I imagine this makes it more alluring for addon devs to explore and make other third party addons (moreso addons that interact with, for example, other software installed on the device).