I won't miss them. I never thought that AEDU was the best mechanic. It was just necessary to maintain balance. I was willing to accept a little bit of wonkiness in exchange for balance in my game that I felt was lacking in 2e and 3e.
Once some splat books came out, I noticed that 4e was starting to buckle under the weight of its options and the balance that I'd hope would be maintained due to the AEDU system didn't hold up. We had characters who were essentially unhittable by any monster. We had characters who could kill monsters of their level in one round of attacks by themselves. These were the exact same things that the AEDU system was supposed to prevent due to limiting the stacking of modifiers and the balance of math.
So far D&D Next is maintaining the balance better than 4e did without using the AEDU system to maintain it. We'll once again see what the future holds.