You might want to consider:
Multiplayer: display other players actual aircraft 3D models and liveries around you - Self-Service / Wishlist - Microsoft Flight Simulator Forums
As for liveries, I’m raising some questions indeed:
Live traffic with liveries - #6 by CptLucky8
And others are questioning their strategy too:
ANNOUNCEMENT: FSLiveTraffic Liveries (FSLTL) - #90 by Tjoeker