2) Requesting an enhancement "Add intercept waypoint" where you would give it a target passive contact and a missile speed and it would do the calculation and add a waypoint at the intercept point? You could then blind-fire your missiles at that waypoint. I think this one would have a good chance of getting in - I would put it in the suggestions thread.
Something like this is what I was looking at, perhaps without filling the map with actual way-point clutter unless that is absolutely required for it to work. One problem with that setup is that missiles are launched 5 seconds later minimum will change the intercept point.
Perhaps a kind of "soft" lock that would still allow FCs to fire without so much hazzle, but only allow firing of self guided missiles and lock their path towards a specific point (and perhaps even a search pattern after point is reached).
It would be pretty cool to operate some "submarine" style stealth ships that can operate alone and fire self homing missiles in the right direction without having to reveal their location.