My only problem with Dashie is her ability to do sonic rainbooms so easily, especially as an untrained filly. Rarity and Twilight similarly start out as masters, the show really wasn't built to continue past s1 which put future writers in an awkward position.

But anyway regarding her personality which many people seem to have a problem with... why is /mlp/ a bunch of snowflakes? Why do you all freak out whenever anypony does something bad? It's a goddamn CARTOON, it's funny as hell when ponies act like assholes or cause problems. You guys would hate classics like bugs bunny and daffy duck.