A new Teenage Mutant Ninja Turtles movie is in the works. Live action with Michael Bay producing. The guys writing the script are the ones that wrote Mission Impossible: Ghost Protocol and the director is the guy helming Wrath of the Titans. Bay mentioned that the turtles would be of alien origin.
Hopefully that means the ooze is alien in design. That way stuff like Krang would be easily adapted. His body suit could be adapted into something truly horrific. I imagine something like the Nemesis or any tyrant from the Resident Evil games, with a space for the utrom.
I know Krang was never called an utrom. I would imagine that, in order to sell the movie, they'd make Krang an utrom to stay faithful to the comics and draw in viewers from the old 80's-90's toon.