So I just noticed the new thorns glyph is a reduction on the CD by 20 seconds. This puts it at 25s CD, so basically, available every pull. Another thing some druids may not have known, the 3 piece tier 1 bonus for druids increases our thorns duration by 50%. On live, this is actually 100%, making it a 2 hour duration with the thorns minor glyph.
So lets say they fix the 50% thing (unlikely though) and we have 30 seconds with a pretty nice reflect for the initial part of a fight. I don't know who else has been thinking new tricks for getting a lead on threat, but just thought I'd add something to the pile.