The only time I used guided missiles was for bombardment and I was very happy with them. Being able to *guarantee* 0% city defence, regardless of what defending units are present, UN resolutions, tech parity, EP situation, etc. seemed pretty handy. Having said that I could have probably just sent 10 more artillery in the main stack to drop the defenses.
I thought these were both useful features too. GMs seem a good way to keep a non-nuclear domination push going by letting cities far from the fighting still contribute units. Presumably you can rebase them to another continent too - that would be very useful and save on sea voyages back and forth to pick up more artillery.
There is no limit to the number of GM that can be stacked in a fort or city ... also they fly from the production city to anywhere in the world ready for use next turn
I thought these were both useful features too. GMs seem a good way to keep a non-nuclear domination push going by letting cities far from the fighting still contribute units. Presumably you can rebase them to another continent too - that would be very useful and save on sea voyages back and forth to pick up more artillery.