Well, they have already shown Twi's family, I don't think we will see 更多 family members surfacing on that side, unless it's a forgotten, evil sibling who's believed to be dead, but that would be so cliché.
On the other hand I'd 爱情 to see Fluttershy's family, 或者 even Scootaloo's for that matter. If she has any, that is.
