SA a bit meh? If Rabada, Ngidi, Nortje are all fit that's a pretty decent pace attack, not to mention Maharaj who is a very decent spinner.
As for Archer having an 'ego problem', I would suggest that is wandering dangerously close to stereotyping. If anything, Archer has suffered in Test cricket from a lack of clarity about his role. Look how effective he has been in white ball cricket, essentially bowling as Cummins does in Tests. He's not some egotistical idiot, he just needs a captain who manages him properly as Morgan has done.