MCU should make an R rated movie

I feel Blade was ahead of its time great. R rated movie and on it's own. Even the blade tv show with Sticky Fingaz was MA. 
As i said in the first post there is no reason they can't make an R rated movie. Joker should put any concerns to rest about r rated movies not being good and succeeding. The more mature marvel proprietes should get MA ratings or be like the Joker and make a new canon for r rated movies and shows