I just read the new Pokemon of the week for serebii.net (they have good strategies I find, plus it helps find counters.) It's one of my least favorite Pokemon, Delcatty. Is no type coverage what-so-ever worth STAB?
I would say no, because the Niche in a normal-type is to have wide movepools and coverage. You lose all of that and more with a Delcatty.
They're crap anyway, so either way, it's a bad choice. xD
I don't really like it for the following reasons:
1.Delcatty's attack=flaming poop on a stick
2.Nobody uses ghost type pokemon (major sarcasm)
3.It has a really divers types of moves, use them well!