On this size map who cares if they take a few bases, on the whole it doesn't matter that much, no one reset last nite. Being the outgunned underdog defending a base is a lot of fun, guaranteed action, but it's a choice like everything else.
On these big maps, if you can get 10 or so players together, it's easy to find a spot to go get some rolling captures, our squad does it too, bfd. Usually doesn't make a bit of difference, except to the toolsheds.