As I said, I write diverse code. None of the modules you mention, a majority of my code needs it. And it's unlikely I would ever write a file that needs all the modules your nextgen provides (and the more you add, the less likely it will be). But "use"ing modules you don't need have a negative impact: more dependencies, more chance of bugs, longer load times, more memory usage. More reason to just list the modules/pragmas you use instead of using a set of modules someone else finds convenient.