264 is a standard anything can play, 265 isn't yet. tbh its more about file size for me. I'm currently managing a festivals content and I'm at 1.6TB of content with 6 artists still missing. Try downloading 1+TB on a campgrounds WIFI, it's not a fun process. But if you package those up as MP4's then we download them and convert them, you just shaved half a week and thousands of dollars of money out of the equation.
Giving users the tools to convert DXV3 back to MP4 for web transfer (without the need for AME) would be super handy (imo).