HoW was not better than TTK for one simple reason: You could hit max level on the same day as it released, it was way too easy (now I'm not saying that TTK is perfect in this aspect either with its double RNG - but it's better). This also means I strongly disagree with #1 of your list, etheric light was a terrible idea (I'm not saying that the ability to bring older gear up to new light level is a bad idea, only how it was executed - it was too easy to max your level) - infusion is a lot better system, and I honestly think its here to stay - I bet we'll be able to bring the TTK stuff with us through infusion if we so desire as the light level get bumped in the future.