How is making a fun-loving and cheereful character into a edgy grimderp pets monster? It's not like it hasn't been done before. No one was asking for grimdark She-Hulk.
Seriously, I would never expect this from Marvel.
You think they would have learned after Speedball's Penance.
It's like they sat down during CW2 and said "We gotta have a fun character turned edgy. The last Civil War did it, its tradition!!!"