I think a great way to display the figure in the Hall of Armor will to have it be the actual Tony who is walking around. Tony often is seen partially armored up, tinkering in the lab in many different appearances, all the way back to Iron Man 1. It's actually a more neutral look than the other 2 Tony's they've made: the Iron Man 3 one still has the chest-embedded classic ARC Reactor which hasn't been a thing for 6 years now, and the Infinity War tracksuit one from the Bricktober pack is specifically his Mark 50 gear, not necessarily what he would casually be wearing around the lab. So a partial suitup version is actually a cool one to have for a Hall of Armor display.