Although i did promise to stay out of your way as the two of you continue to manage the WIKI as you see fit, My opinion is that the main page should be refreshed from time to time. What you are suggesting is relatively minor and I don't see a problem. The Main Page is protected so that only Admins can edit,
By the way, i've been watching the page view counts and the MM Wiki is sometimes way over 10,000 views per day. It reaches a lot of people!
I re-tooled the Shetland Wiki and am currently working on the Jack Reacher Wiki when I have time. The MM wiki is yours and Dr Dementors to run and you have done a great job!