Ever since the VHS days, we've had rerelease after rerelease of titles.
Just think of Star Wars. In the UK we got (as far as I can recall)...
Rental copy - black spine
1st retail - silver 'all time greats' design
2nd retail - new 'all times greats' design
3rd retail - white spine (widescreen)
4th retail - blue spine (widescreen and full screen options)
5th retail - Executor boxset
6th retail - Original Trilogy boxset
7th (a) retail - gold/platinum boxset (widescreen and full screen options)
7th (b) retail - gold/platinum individual release
Granted, each design was different (some more similar than others) but it's no different to rereleasing Blu-rays be them in steelbooks, digi-packs or amarays. It's something collectors should be used to. The secondary market seems to be strong for steelbooks, but that's the fault of scalpers (and their customers) not the retailers who commission steelbooks in the first place.
Steelbooks are a product, nothing more. Some designs are retailer exclusives - FS Iron Man, Play.com Iron Man, others are worldwide - RE: Retribution, Skyfall and others are country exclusives - Repo Man, Rumble Fish. It's just the way the game is played.
I've yet to see a steelbook rereleased years later that's identical to an earlier version. What counts as a rerelease anyway? The play.com Iron Man wasn't a rerelease as one was for Canada and the other for the UK. They were both first time releases for their intended location. Star Trek, yes, it is a rerelease in the sense that the Play.com, Zavvi exclusive and country-wide releases are all designed for the UK but they're all different. Play's was 3 discs. The new white one is 1 disc (and will most likely not have have the blue banner) and the black one will be, well, black.
With distributors doing everything they can to keep physical media alive, and knowing steelbooks sell, we have to accept that this is just the beginning. They're making them for their own ends, not to support a collector mentality as such. We need to decide what's important to us. If, like me, you only buy films you love in steelbook packaging then it doesn't matter how many are printed, if they become rare and valuable and whether or not they get reissued down the line. If someone buys them for other reasons, well, it might be time to change their buying habits.