Apparently Midway and film maker John Woo were putting together another game, entitled Gunrunner. Sleepwalker Media mentions a "Midway Games' prototype, Gunrunner."
An ex-employee LinkedIn profile lists them as an "Tools/Engine Programmer" for both Stranglehold and Gunrunner. Another resume revealed a "Lead Animator" for Gunrunner.
The reason Gunrunner and John Woo are connected is because the term 'gunrunner' is used a lot in relation to John Woo's work, notably Hard Boiled, of which Stranglehold was based.
In any case the 'Gunrunner' project seems to have been "cancelled", if Chris de Priest's is to be believed. Site notes that Sleepwalker Media's 'Wow Moment' term could meant to have been 'Woo Moment', although it's tenuous.
Did you enjoy Midway and John Woo's Stranglehold, videogamer?