I don't really see how it would help. If someone tells me that the meeting will be at, say, 10:00 AM PDT, then I convert that to my own time zone so I know what time the meeting will take place in my time zone.
If instead they tell me that the meeting will take place at 17:00 UTC, then I would convert that to my own time zone so I know what time the meeting will take place in my time zone.
Either way, I have to convert what they tell me to my own time zone. Converting from UTC to my time zone isn't inherently easier than converting from any other time zone.