a lot of things you can delete or send to your vault (if space permits). I sent all my mod components to my vault so I can delete them over time. Dark Fragments, Finest Matterweave, Rainmaker, Tincture of Queensfoil, Scavenger's Boon, Ghost Fragments, Concentrated Mattergem - all useless.

One of the most annoying things in this season is the triumph t-shirt promo code. Normally I buy some gifts for myself in the bungieshop in december. The t-shirt code was a so annoying ad ingame and the audacity of not being able to delete it that I decided to spent no money in the shop at christmas. "Yeah, let's clog their inventory with a not deleteable item. Dawning event is incoming, they won't need any space. Hopefully they delete some important stuff or lose it in the postmaster, so they have to grind more."

Working as intended It's meant to annoy you to the point you just buy the dang shirt Scumbaggery at it's finest But hey, it sells shirts Bungie won't remove it until they sell enough shirts This isn't a bug, their Ad is exactly where they want it

Hey, You will not be able to remove it yet and no one from Bungie can on your behalf, this is intended and you will have to wait till after the offer expires. I can suggest moving some things into your vault just to free up space for the time being without having to delete anything.