The death was pointless as would pretty much any superhero death on film be (yes I'm including Coulson as a superhero
) unless they are the final film in an arc like TDKR. Just proves that these guys are better alive than dead whatever temporary dramatic gain you might get from their death. And now we have a stupid he didn't really die scenario which will cheapen any future death.
And agreed above, the only guy it really made a difference to was Stark and surely there was a better way of writing his motivation than killing off a good character.