[Zope] disabling things

Zope webmasters/sysadmins, We're not letting FTP traffic through to the server so we never use the FTP "feature" of Zope. Non of us use WebDav either. Supposing we disable these features, will it increase the Zope performance at all? (that being the only reason to disable them) Are there other things that can be disabled if you know you're not going to use them? best regards, Peter