So this feature adds a window to the profile page which has the full avatar of the player and allows to see equpped items. Also prefebrally there could be an inventory icon near person's name which obviously lets us see player's inventory,

I made such a post a year ago, I hope they heard us

If you go to the beta website it has the first thing you mentioned, a way to see equipped items. Go to the avatar interface and click on that drop down and click on "View wearing [ItemCategory]". The other thing is pretty good, but I think many have already suggested it.