I was talking elsewhere about the standoffish nature of $90 in a month for some people and I got to wondering: is there any reason why the cycles have to be 6 packs? Could they instead be 4 packs 3 times a year?
The 6-in-6 was a specifically to break up the slower changes in the meta to bigger, more immediate changes. MtG (unless they've changed since I last played 8 years ago) releases 3 cycles per year, SW Destiny releases 3 cycles per year, and we'll be receiving new clan roles 3 times per year.
My initial concern would be balancing and if they could pack the theme(s) they usually do in an 80 card count.
Personally, I'd rather have a single box at $90 every six months or $60 every four, but there have been enough arguments made for and against that way of thinking so I'll focus on the cycle cut.
Obviously, they couldn't do this in the next cycle (or even the 2 after that) because that should be in the printing/releasing cycle already and they build and test whole cycles as is, but if it were reasonable to change to it in a year and a half would that be something anyone would be interested in?