So the idea is that you could redeem one furniture item for every trophy item you have. For example echo stone would result in a white glowing stone that lets you read the echo when you place it in your guildhall. Recon modules could fit in a nice bookcase and you could read them from there. Hatch handle would be... well, a hatch handle on a stand and so forth

You would still get to keep your trophies of course but this would let your guild show off your achievements as an unit taking down shadow lairs like nobodys business filling up an entire room with echo stones