What I'm trying to do is add palm trees to the Mediterranean climate and cypresses and others to semi-arid; also I'm trying to decrease the amount of trees that appear in open desert - m2tw makes look like theres an oasis every 10 ft.

I know its possible to do this in Rome, but because of the way m2tw works, if i deleted the vegetation.db file wouldn't it just use the default from the pack instead of my vegetation.txt to generate the new file?