MTG_series
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
The fact that we repeated the clan leaders and Spirit Dragons in the Commander decks only reinforced the idea for many that there must have been a way to fit the Dragonlords in
Scry cards always have a number, such as scry 2, telling the player how many cards to look at
The tribal decks that lean on Kaheera, the Kenrith Zirda decks, and the crazy folks who experiment with the other companions might be upset, but it's not like we'd be losing 10, 9 or even 8 amazing companions
Depending on the reach and flying blockers, this pays for itself in two attacks and spreads a bunch of damage across the board thanks to myriad