Bulk enable/disable modules
This is how we are working:


Keep as much as possible in code. Features strongarm and other modules are helpfull here. Often we figure out the configuration variables of the modules and put them into settings.php by hand.
Things like enabled modules are left to the DB. We maintain a central copy of our db in GIT. If someone adds a new module, he is responsible for taking this DB, adding the module and pushing a new copy to git together with the new module code. The backup &amp; migrate module is very handy here.


An other alternative would be to develope against a single central DB. The disadvantage of this is that you will likely face situations where one developer trashes the DB and therfore the work of his colegues as well. You could set up a cron job taking a DB dumps at regular times to make sure you don't loose to much in such a situation.