honestly...they've killed magneto (several times) , xavier, storm, mr. sinister, madelynne...and most famously (to the pointe of nausea) Jean Grey /Phoenix II/Phoenix IV. now...if THOSE arent examples that paint a pretty clear history of what will happen with Cap...then i dont know what else is.
the ONLY person in Marvel Universe who has STAYED dead to DATE is DESTINY. and if ANYONE shouldve stuck around..it SHOULD have been her. there's no over population of bonafied precogs in MU.