The UFC's HW roster is pretty awesome right now amongst the top 4, maybe even 6 to 7 names... but beyond that, it's pretty much it's usual, sub par self. Point being, there's no reason Tim couldn't be brought in for some fun fights.
Honestly, a fight I love and I've never heard anyone else mention is to bring Tim in against Struve. Struve seems to live on that fringe contender status... now beating Tim would obviously not make him one, but it would certainly build his name seeing as how like it or not, Tim is still a big name. And should Tim get the victory, he without question beat a top ten UFC heavyweight.