Although the Vero4k that I first applied the update to is now not booting Kodi, I applied the update to one of my RPi3s this morning and it went absolutely perfectly, not a single glitch. Didn’t have to disable even ONE addon (and VideoExtras works perfectly) or the Estuary skin.
And KUDOS to the OSMC team! The OSMC update with Leia 18.2 actually runs BETTER on the RPi3 than did whatever17.xwascalled! Smoother navigation, just generally improved responsiveness.
I think I’ll try my Vero4K+ next and see how that goes.
Thanks again, guys!