>>107122580 (OP)
I've used the regular edition my entire life, but the Enhancer for YouTube situation got me thinking that maybe I should switch to the Developer Edition so that I could install extensions not validated by Mozilla, should I ever need to.
For anyone who doesn't know, the Enhancer for YouTube dev took it off the Firefox Add-on store after getting fed up with Mozilla's verification/validation policies or whatever they're called. It can still be installed, it's just not getting updates.