Well the DNC did curtail the potency of superdelegates quite significantly this time around, though really they should just go away.
I don't have an issue with the primary process*, but I do have an issue with everyone with a D next to their name deciding that this election is the one they should use to boost their popularity. I mean, you can easily cull the candidates down to 10 without blinking an eye and not lose any serious contender.
*My actual issue with the primary process is how it reinforces the impenetrability of the two-party system. We are well past the point of needing more than just Democrats and Republicans but the amount of work needed to get another party up to a level playing field is Herculean.