I think so, but I dunno, a Firefly Cameo in the comics is fine, but unnamed. Maybe they could easily release a Firefly toy if they just don’t name her. Like a bonus pony in a regular set.
@Gomenasai: It wasn’t clever at all. Their names rhymed is all. It would have made more bronies squee if Firefly had been with Rainbow Dash in much the same way that if Surprise was bundled with Pinkie Pie, or as Starly said, Posey with Fluttershy.
Her being in 2pack with Rainbow Dash was pretty clever. They should have done something similar with Fluttershy’s 2pack. I just don’t see how Daisy Dreams is related.