Well, unless I've missed some news release today, we don't know for a fact that we'll be working up from XP Level 20 at TTK launch, our current Light Level [i]may[/i] equate to XP Level. That being said, whether it does or doesn't, I expect that in the short term that it'll all be relative in terms of competitive PvP and PvE (as difficulty levels will likely be adjusted either way) In the longer term, I'm looking forward to it as it'll be more aligned with progression in MMOs which I like. They reward time played more than the current Destiny RNG loot system tied to level which has been frustrating for some before HoW.