In New Avengers: The Reunion there's the WCA- World Counter-Terrorist Agency.

In Mighty Avengers, there's G.R.A.M.P.A., the Global Reaction Agency for Mysterious Paranormal Activity.

Of course there's MI-13.

Not to mention the American groups like A.R.M.O.R. and S.W.O.R.D. will be focused on more.

Seems like without SHIELD, there sure be a sort of Global arms race of dealing with superhuman threats.

Marvel should really be pushing things like a new Alpha/Omega Flight, the Winter Guard, and Big Hero Six to fill in the gap that SHIELD left.