Oh yeah... Imagine that the maps would also change with gravity :O
The little soldat is going to be crippled - won't be able to jump on a polygon that is 2 cm above him (2cm in human lenght).
And then what will happen to the climbing maps? With the impossibility to jump higher as now, their quality is to be ruined. That goes for every map type (Like trenchwars) where flying is disabled.