This Nolan wave is totally pointless. If 4K discs are available for these movies then they should be included.
Steelbook collecting used to be an exciting hobby back in the day, now it's just become an over diluted bloated beast, intended to milk a few more bucks out of repeatedly repackaged movies...
I can count the amount of steelbooks I've bought so far this year on one hand ( with fingers to spare )......
There's still so much stuff out there that's never received the steelbook treatment, a good example being Bad times at the El Royale....