I think a good board also means to have alot of default options rather then infusing or moding it
Not exactly why would you want a bloated forum software? It simply adds more forum load time.
A simple if-then statement to check to see whether or not a feature is enabled is not going to slow down anything to any degree anyone would notice.
If the feature is not enabled, the relevant code won't run.
More features = more mass appeal. More mass appeal means more users and more contributors and more people hanging out in the forum answering questions that others might have.
There's tons of stuff I would never use. But all said, I would rather have them in the default installation but not enabled than not have them at all.