OP, the EXP is fine. I've bought the collectors edition so I was out playing early, and I have one Lv50 class, and working on multiple classes right now since the advent of patch 1.18. Personally I don't consider lv50 content endgame at all, thats more like mid-content.

thats just my 2 cents

Like I said earlier before, if you really want to complain then do it in FFXI, over there you can get Lv95 in 24 hours.