So I don't know if this has been discussed yet or not, but here goes...
When someone deadbeats after going through the launch, it remains whatever they had left up in the missile launch and never resets until someone else kills that 1.
not to sound awkward but my vote is split: white 30 is by far the most clear on the large version of the map however when you condense everything either no shadows or black 60 works for the small map, white just makes looking at the map hard as it creates a glare that is uncomfortable to look at ...