Currently the only use for them is to add in your house as a cosmetic addition.
Suggestion:
1. Add the ability to sell them to a slayer master for slayer points and(or) GP.
2. Not sure if its possible but maybe add a way to gamble them like we do with firecape for a chance of obtaining the pet from that boss?
^ maybe a decemt chance of obtaining pet, like 1/50 or something, cus its as rare as a rare drop
So as an ironman, ive noticed that we are pretty much required to make instances to boss. So i have a suggestion:
1. Make boss rooms as follows:
*1 main room for normal accounts and maybe classic accounts, then make a seperate room(instanced) for all ironman\uim but also have it so you can buy instance aswell/
What this does is allow ironman\normies be able to boss with a little less worried about being crashed by someone with absolute max gear, also it still leaves the instances option for people to be able to get their own room for slayer tasks or w\e.
ironman can boss with ironman and normies wil be able to boss with normies or classic if u make it for classic to.
This wouldn't take away the money sink with instances as they will still be used often but this defenatly would help a bit with not being able to boss xd