Copy/paste onto new thread, after all that typing!
Toast have always had Archive sales. The difference is, they used to discount things once, at end of a season, starting at 30% off, then moving to 50%, iirc. The following year, anything still unsold would be in the Archive sale, at 80% off. I don't remember anything ever hanging around! Or maybe they used to rag any rejects?
This was in the days of two main collections, Sping-Summer and Autumn-Winter, with embedded mini releases for High Summer and Deep Midwinter/Christmas. I preferred this, easier to plan when you can see the entire offering at once, and plenty of time to save for anything special.
My spending plan was typically one full price item, 1 or 2 sale items, plus maybe a few things from the archive sale (if my shared-line dial-up didn't scupper me :). Over six months of each collection. Which is pretty much the embodiment of the thoughtful slow-fashion ethos Toast say they aspire to.
Maybe it didn't work for Toast. In truth, I assume the corporate buyout has led to multiplying collections, at increased prices, and being stingy with sales, all in a drive to maximise profits.
It sounds like Toast want and need and are finding a wealthy clientele who can buy dozens of items at full price each year. It just won't be their original customers, for the most part. My typical Toast experience these days is items vanishing from my Saved list before I've got anywhere near being able to buy them :D