If they didn't release it, then you'd be whining about how its taking even longer to be released. Face it. No matter what the MTA team do, people like you are gonna be whining about something. Just play the damn thing after it's released. You'll still be waiting for footsync, but you'll have something to play in the meantime.
But will it still be coop? I really hope they at least continue to try to sync peds and traffic etc. If they don't, then they might as well quit because it'll be no different to MTA and therefore pointless.