As far as R&D is concerned, it is the theme discard cards that cause the most unhappiness as discard decks are one of the scary three (land destruction, permission and discard) that tend to keep people from playing the game and thus tend to annoy players at a much higher level than other decks
We expect to get further teases of this set around the time of the Hyperia City Lorecast, much in the same way that we got Hyperia City teases during Attack of the Vine
Then listen to the sweet sound of your opponents telling you how much they hate you
The third set of Disney Lorcana has been announced and it's called Into The Inklands
Simply put, I dont have enough of either to make separating them by type important, but if that changes, I can update as needed
Learning to leverage bounce spells is an important step in becoming a better Magic player