TBH, All i've ever wanted for a long time is a "Everything Crate"
All skins are included on it. If you bust you get nothing, if you get a skin you own you get a re-try.
My biggest issue (and the reason i dont buy loot crates now that i have pilots) is that the more you spend the worse your odds would get. (IE if i want one thing out of a lootcrate such as the general lee and i managed to unlock everything in the crate except for the general lee i would just keep throwing money away for a 10cent return)
That would be my ideal up there ^
That being said if you took any of my skins that ive earned/paid for (T-Swift ect.) i wouldn't care as i dont ever use them and i would rather see good skins instead of that garbage. However i can see why people would be upset if you did.