I'm having some kind of a unique situation here, but at the same time it's the typical mess web-beginners create.
I took over a project for an event-company and at the moment they're having several sites and domains online for the similar (but not the same) thing. So they're offering 4 different main events and they basically are in the same branch (sports) and the same location, but other than that they've got nothing to do with each other.
Problem is that they set up several (more than 1 each) domains and with that also different designs, which is just a big big mess to maintain. They're also sometimes fighting with duplicate content.
At the same time though more than 1 of those pages appear in the google results for the same keyword (sometimes covering more than 50% of the search results on the first page) - meaning the users conversion rate is much higher than it would be with only one page.
I'm wondering now what advise would be best, as I have a hard time deciding between cleaning it all up to not more than 1 page each sport and leaving the structure as it is, - as it has a good conversion rate. Do you think 4 different designs are distracting the user although they're of the same company ?