It really depends on U.N. through U.N.S.C. and Prosecutors office.
Back in 2008 Kenyas case was a high profile case. U.N. had to get a meidator through Koffi Anan. Koffis vision was for an internal court mechanism and if it fails then I.C.C.
Ocampo wanted to leave a legacy with Kenyas case he expideted it and in the process got the wrong guys with fake evidence .
Current prosecutor Khan having participated in Kenyan former cases might as well decided to bring into life new cases as soon as possible.