User blog comment:Brandon Rhea/New Page and Article Headers: Official Release Date/@comment-26437440-20170613153909/@comment-23865-20170613160702

Hmmm... The wiki logo serves as the most recognizable emblem of your wiki, and doubles as your brand for users both old and ndew -- but only if it's consistent and stable, so that people have a chance to memorize and internalize it. :)

So with that in mind I'd say changing how your logo every refresh actually hurts your wiki's recognition with fans.

I'd need to know a bit more to advise any alternative, most importantly: what goal do you want to achieve with the logo changes on refresh? Is it just for fun and variety? Or is there a more nuanced reason?

Note that all the above was written wihtout seeing your logo. Posting links in these cases would be very helpful and saves us some time. :)