I have mixed feelings in relation to steelbooks. They look lovely, but not very practical when they contain more than one disc. For some reason they don't seem to make them with one disc on the left and one on the right, but rather two on the right with one slotted behind the other. For someone with OCD about scratches and thumb marks on discs, this makes it rather tricky to get discs in and out without sustaining damage. I also give low marks to the Adam West Batman box set packaging for the same reason. Discs should never be one on top of the other.
In the few months since I posted this I have got the steelbook bug bad, and acquired several more. Steelbook collection now includes Tenet, Back to the Future, Sleepy Hollow, a couple of Indiana Joneses, Stargate (film), Power Rangers (film) and both Wonder Womans. Most expensive one is the Labyrinth 4K steelbook. It will not be my watching copy (I have that film in so many disc formats), I just wanted to own it. Have just ordered steelbook Inception.
Little is known about this goblin beyond its dual role as an offensive weapon and teapot.
I own one steelbook (Doctor Who 50th Anniversary Specials) and that is only because the previous version of the contents as a set was out of print. I don't care for the steelbook format as such. Too easy to scratch.