The suggestion is pretty much in the title. Give players the ability to use their gear set portraits to import those portraits to their adventurer plate portrait. It's a quality-of-life adjustment that should already be in the game, as it's tiring to keep making portraits for your adventurer plate from scratch whenever you want to switch your portrait to a different class or a different pose within the same class.

Currently, if I am using a NIN adventurer plate portrait and want to display my RPR gear set portrait, I have to edit it from scratch; i.e. switch to RPR, pick all design and character options (from scratch, even though it already exists on my gear set portrait list), and position and change the lighting, poses, expression, etc. It's a QoL change that should already be in the game with the introduction of the new gear set portraits for PvP/Mahjong.

Additionally, whilst unrelated to this post, allow PvP portrait rewards from season 1 to the current season to be extended to the adventurer plate portrait design (base plate, pattern overlay, plate frame, etc), much like the Ultimate rewards that extend not only on players' portraits but also the plate design options. Right now, those wishing to express their PvP rewards are limited, and restricted only to their portraits, and some of the current plate design options contrast many of those portrait frames, backgrounds, and accents. It'll additionally incentivise more players to try out the game mode, as the rewards since season 1 up until now have practically been the same.