Fedor needs to get more cage experience, a little mistake in positioning like he made vs Rogers, allowing him to get top control near the cage could turn into a huge mistake vs Lesnar. I rather see Fedor get used to the cage and the UFC with one fight prior to a title shot. It would also allow the UFC to really promote the crap outta him and his accomplishments and hopefully he KO's the 1st victim and viola you have the hype machine working in overdrive and the most watched PPV in MMA history.
This way also allows time for Brock to fully recover. Which for some reason i fully expect.