Interaction/ Removal
I simply believe that in general removal has just gotten too effective, too prevalent, and too easy; needing little support to be effective In many formats and just negates so many exciting strategies and player enjoyment, especially for newer players, but also for us veterans,
Out of the past approx. 40-50 games I have played in recent limited and Arena constructed formats I have repeatedly fought against constant creature and hand removal, with players knowing that these mainly black decks have a high win rate they are just so prevalent and difficult to combat. I don't think this applies to every format all the time, but in general is exhausting and doesn't have many or enough effective options to combat it, as there used to be along with a bit less powerful removal. Ex. Hero's Downfall was a chase rare and now can barely pass for an uncommon, I know this might not be the best example as I know it has caveats that are reasonable. I am speaking mainly for Standard quite often, and Pioneer, Historic and Timeless and Draft and limited formats seemingly all the time. Just today I drafted such a cool and fun deck with some exciting mythic rares that just repeatedly died to removal, and I never really got to use them in the whole draft. While I can see what some of the answers may be, I don't want to play that type of extremely grindy, predictable or fight fire with fire decks and strats. I understand creatures have gotten so powerful they need answers, but to what extent that it negates playability of so many enjoyable cards and strats. We have to remember that not all games are played with pro tuned net decks an cookie cutter limited blueprints.