Revision Control for WPMU / WP Multisite

I'm curious how other multisite admins handle revision control? I've got users that make tons of revisions to posts, and I don't think there's any need for 100 revisions. 10 should suffice in my case.

I know there's a Revision Control plugin for WP, but this forces me to configure the settings for each site in my network separately.

How much trouble would it be to develop something that allows network admins to configure this globally?

Perhaps it could be as easy as adding a Network Admin Settings panel to the above plugin?