Decidueye is a support pokemon, through and through. Defog, Roost, Spirit shackle, Confuse, all of these kinds of moves and that typing scream "Support pokemon!" It's not an unstoppable warrior like Blaziken, and it never will be. Why does everyone think/want this thing is destined to be the next Blaziken? Why not just appreciate it for what it is, an annoying little roadblock that can make your opponent's battle miserable as you defog away their hazards or trap their special attacker behind your 100 SpD and easy recovery, or block their attempt at Rapid Spin? That's still a lot of fun. Decidueye doesn't get a lot of coverage moves to back up that Ghost/Grass typing (bad offensive coverage, actually) and has no Special movepool at all to use with Nasty Plot. Not every starter is going to be the next Blaziken. In fact, I'm kind of glad they all aren't.
