Been working on this for a few weeks, but had to go back and remove a few things that were already spoiled or checked off like Rainbow Dash and Applejack's Parents, Felicia Day & William Shatner VA and Arcane Mumbo-Jumbo, which would be covered by the magic circle we've seen Sunburst & Starlight creating.
A couple that probably could use explaining:
* Lightning Dust — Would like to see her return, whether or not she is actually redeemed or has become more of an antagonist.
* Zecora Episode — Zecora has literally been a plot device for the majority of her existence. Hopefully she gets some real development this season.
* Castle of Friendship Finally Gets a Staff — will probably earn 15 downvotes for that pic alone.
* Celestia Episode — Luna's had so many at this point, how can it really be so hard to get her sister more involved?
* Snips Spotlight — Snails got his turn in the spotlight with Buckball Season, would love to see the same for Snips.
* Starlight Moves Out — In the previews we see Twilight wants to graduate her, but where will she end up?
* Tiberius — Come on already! He's in the comics and in G.M. Berrow's books!
* Wonderbolts/Guards Good at Something — Please? Every time they appear they get Worfed into the ground.
* Returning Fave — Iron Will, especially.
* Cheerilee Gets Some Love — Really want to see her developed more. She's frequently around, but usually for plot exposition or (cheerileader) eye candy, like Zecora.
Art is all from Derpibooru, from some of my favorites:
Discord Backstory: >>628106
Earth Pony Magic: >>1121184
Spike Development: >>47398
Lightning Dust Friend or Foe: >>931603
Star Swirl/Scorpan: >>966620
Zecora Episode: >>558954
Tree of Harmony Revisited: >>647908
Castle of Friendship Finally Gets A Staff: >>1202063
Flower Trio: >>1305265
SS/DT/Babs Development: >>1139464
YEAAAH!: >>1218867
Celestia Episode: >>1044624
Horses Doing Horse Things: >>504385
New Civilization: >>625802
New Fandom Ship Christened: >>1278534
Snips Spotlight: >>811387
Starlight Moves Out: >>1119320
Tiberius: >>701886
Pies: >>1308474
Wonderbolts/Guards Good at Something: >>1150127
Sisters Backstory: >>1014228
Returning Fave: >>1337825, >>1153424, >>1133432, >>380324
Mythological Monster: >>912007
Cheerilee Gets Some Love: >>806285
And here's the card I did for season 5, which I'm so glad has had so many fulfilled. >>797365