Hey, just thought of a neat thing to balance the flying fortresses of doom. Characters must have above average strength to climb a rope (6+ points in str). Speed of climb is determined by str stat. At 6 points you're the slowest. Also zombie pulls should not be ignored and could be calculated in with str stat. If you're only at 6, then trying to pull yourself up and away from z's at the same time should be very hard with a good chance to fall. This would force those who want flying fortresses to pick at least 1 str stat at the beginning, and still make it slow and potentially painful to use the ropes.