What are you and what are we getting out of having a currency obtained from heroics give out loot that is useless to heroics?
I think that Justice Points are perhaps more of a stepping stone than they once were. They were originally added for those situations where RNG turns against you, and you haven't obtained a drop for a particular slot. Even if you didn't get the gear over successive runs, at least you have some Justice Points to help fill in the gaps in the meantime. They are returning to that intent more than being an alternative method of accruing Heroic level gear.
After you obtain your Heroic gear, it's true that Justice Points won't be as useful. Obviously, they can be turned over for Honor, and at some point in the future we may add trade materials or Heirlooms to the quartermasters.
Man, this is the first time I've really thought a Blue was totally off-base. You seriously don't know what you are talking about.
JP are LESS of a stepping stone than they have ever been. What Blizz also fails to realize is that VP as well are less of a stepping stone. (So you grind Rep for days to unlock a vendor, but don't have the valor to purchase the rewards -- C'mon, you seriously can't see why that pisses people off?)
The OP was correct -- there is no reason to purchase JP gear.
The problem is that JP/VP is a remnant of a now debunk system. The ONLY reason we have two tiers of points is because they were necessary when 10 and 25 man Raids rewarded different level gear.
Cata truncated the system, streamlining it in an effort to prevent all the badge turn-in problems. Downranking badges/marks sucked. The JP/VP system helped a lot.
Truth be told, Blizz should have simply left JP/VP with Cata gear and invented another Currency for MoP content. Instead, we get the worst of both worlds.
The problem is further truncated by the changes to PVP gear. Same ilvl PVP gear will always be better than PVE gear for the simple reason that it is multi-functional. So, not only is there little content and reason for JP gear, but there's also competition from Honor gear.
The BEST system MoP introduced was the coin system. And even that is flawed.
I know it's hard to admit when you've made a mistake, but you have. And the proof is all over the place -- dropping Honor gear ilvl, raising JP gear ilvl. JP gear is worthless. JP is nothing more than a funnel for Honor Points. If anyone at Blizz thinks otherwise you guys are seriously smoking the good stuff.