adventures for balloons

can we add adventures to the list of items that can be converted in to balloons for the anniversary event? I would love to convert some of my unused black knights, secluded experiments, roaring bull, dark brotherhood, arctic explosion, lakeside treasure, whirlwind, riches of the mountain and storm recovery adventures since i have hundreds of them built up.
or, can we have some way of mass consuming these. like "sacrifice 10 copies of the adventure you are running for double XP and loot."
anyone else hav ideas on how to burn unwanted adventures besides the little red x?

I've always thought that they should make it if you red X an adv, you get some map frags.