It's called initiative and foresight. And the mutants did THAT...because they now have power, presence and mysterium with which to assert themselves. Earth, as a whole, is actually made to look stronger now (despite their population size) than it ever has before, in the Galactic Political arena because of the mutants.
The Shi'ar is a separate Galaxy from Sol and have always held a significant position on the Galactic Council.
Wakanda is so petty. But that's okies...They can stay pressed, hording their wealth and technologies for Wakanda and Wakanda alone. Storm is Regent of Mars and about to do things, on behalf of ALL the peoples of Earth.