#1: Would certainly be cute, but I'd like it to be in a non-literal way. We don't really need the appearance of more phantom family members for Twilight.

#2: Not sure how this would fit into the show. Read it and Weep was done very well with switching back and forth, but a whole episode might be a hard sell.

#3: Doesn't have to be a 'night villain,' but I would like her to get a moment like Celestia at the wedding where she gets to show off her power, too.

#4: I don't see this happening. They're not going to start pairing off main characters with supporting characters like that. They barely even reference Rarity & Spike which is an established 'relationship' between major recurring characters.