It is also something your opponent will see coming, which removes a lot of the power of a board sweeper
Warping Wail was passable, but each of its modes was so specific that it never felt amazing
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
Concealing Curtains A way that I differ from Booster Draft enthusiasts is that I generally cannot muster any excitement for 0/4 creatures
Crew 3 is easily manageable, and once you can Hamsphere can swing as a 7/7 that deals three damage
My issue isn't Wizards making optional "money-grab" products but where the money from those products is going, which is very clearly not to fixing issues with Arena (where the economy is still brutal and tournaments are still a joke, thanks to the lack of a spectator mode), supporting Magic Online (where we've stopped getting Commander precon cards in a timely manner), or organized play (which Wizards recently seemed to kill with no replacement for the current system announced)