spoiler So what is left to do?

[Unlikeable Pony 2,698]

- Give Star Swirl an appearance/role

 

On this note, I'd really like to see some legends and lore about Ponies of legend that WEREN'T unicorns. Pretty much it seems that the only ponies of old who really mattered to the point that they affect the present were unicorns, like meadowbrook or starswirl.

 

Give us some pegasi or earth pony legends.

[Measure Theory 44]

They could do quite a bit with what they have now.

- They could develop the background ponies some more​. They could also make a few episodes on the sisters, Cadance and Shining Armor, Discord, and Zecora. Perhaps Trixie too, since she hasn't really gotten that much attention.
- They need to address Starlight Glimmer as she hasn't been taken care of yet.
- They could also make some episodes about the Mane 6's families. So far we've only seen Rarity's, Applejack's, and Pinkie Pie's family, in which Applejack's family has been the only one that has really been fleshed out much​. That's another 3 families to address at least!​

- More world building.

- They need to make a serious episode regarding both Fluttershy's social anxiety and Luna's depression. In the past episodes they treated their conditions like they weren't that significant.

- Some more CMC episodes regarding their new talents.

- An episode in which Rainbow Dash joins the Wonderbolts.

- It was addressed in the cut scenes of EQG-3 that Sunset Shimmer may be visiting Twilight sometime in a future. Perhaps a Sunset Shimmer episode? 

- etc.

[GrifCannon 102]

we also need a discord origin episode and a Sunset shimmer returns/visits equestria episode

[cider float 2,538]

There are so many characters that haven't been completely developed yet. For example, Zecora, Celestia,  Shining Armor and Candance etc.-- not to mention the massive amount of world building that is possible. There is still a lot to be done; or that can be done. How much the show will cover before it ends is the question.

Yes but without a build up it seems meaningless and lack in value.