The problem will be the new LVT A4.
You sneak with your fleet behind the lines and park it in front of a field.
There will be no bar or dot on the map warning or alerting the other side.
You take one armoured LVT with this nice howitzer blowing the ack to hell.
And still there is no dot or bar on the map, because most times enemy gv aren't shown.
It will be a joyride straight to the maproom.
I'm afraid, that in times when few people are in the MA, this would happen far to often.
(oops my english left me
)
I suggest a radius of 10 miles around a field where all fleets are visible!