Blue The Pikachu

They've had her in, what, 3 times? Plus the movies (haven't seen RR yet, so can't really have a say in that.) I'm guessing you didn't like what they did with Derpy then, trying to put her in as much as possible?

At least it was subtle.

Besides, as a small time merch collector, I cannot tell you how infuriating it is to try and find some good Rarimerch only to get hit with a bunch of ponies who have had less than 30 seconds of screen time and no lines whatsoever. It seems to be by design, which is superficial. How do we know Vinyl isn't rude and snotty to everyone she's around? She's had no lines, so for all we know she could be like Blueblood.

It's all about business in the end. But as in personality, we just take the DJ Sterotype and slap it on her until things are made canon, so this is why I'm actually excited to see this episode, to finally get a Canon look at the characters we assume to have personalities.