Okay, I don't think anyone would refute that. Completely writing off any prospect who has tools or is having success in the minors is dumb. I root for the command guys too but it's pretty hard to shoot them up your list or get excited about them. Every once in a while one of them finds a way to really succeed at the MLB level but most of them end up as relievers, depth, swing-men, etc.
For someone like Joey Murray the most likely path to MLB success might be for him to somehow add velocity, like it or not.
Some of the stuff you listed is fairly insignificant at predicting MLB success though. There are composed college pitchers who hold runners amazingly, repeat their deliveries, don't walk people, have great pitchabilitt and movement, and throw 86 and have no chance of making it.