> it just needs to be for the lighting fixtures
Its not like your bulbs are plugging straight into your wall outlets. You've got some kind of lamp fixture that the bulbs screw in to, correct?
Your lamps would still plug into mains, same as they do today. The lamp fixture overall would contain the driver components, hopefully in packaging which lets it manage heat well and have good build quality. But whatever parts do fail routinely should be able to be easily replaced with some kind of standardized socket. It just seems like we're trying to squeeze too much too cheaply into a form factor that's ill suited for the requirements by trying to shove all the driver circuitry into the same envelope of an older Edison A-shape socket style bulb.
This has already kind of been a thing for a while with low voltage halogen lamps. The bulbs themselves aren't made for mains voltage, the lamp structures themselves give the right voltage for the halogen mini bulbs. I've replaced a few bi-pin halogen lights for LEDs with drop-in replacements (especially for outdoor lights), but this same kind of bulb packaging hasn't really been very common for interior lighting from what I've seen.
> Now, I'm not against having a new socket standard. But it would have to be connected to 220 V.
Why would it need to be 220 V in the "socket" for the bulb? Why do we need lamps themselves to just be a frame to hold a wire, why not put the driver circuitry in there to step it down to whatever voltage we decide to drive the DC LED bulbs at?