Their basic thought on the matter is the gear between olders raids doesn't nee such a big gap as it has (relatively speaking), BWL gear no longer needs to be better (or quite a bit better) than MC gear for example, aside from it no longer being current content, with spec/talent changes over the years, even if you had MC gear, you'd slaughter BWL pretty much in an hour without even needing these upgrades anyway.
I dunno how the specifics will go, but closing the gap on older gear (maybe even tuning that down relative to spec changes etc, so that they could have like half the stats as BWL gear had (relatively), but still be considered as strong (because your base character is that much stronger)) could be something that they'll do.
I quite like most of the gear changes, could be a little more random/exciting