I think the Divas division is a huge mess at the moment and putting the title on Kaitlyn makes it worse. Every divas Championship match that Kaitlyn will wrestle will be bad, she's too green. What's worse, she gets a wimpy reaction from the crowd, her ring gear looks like ODB's leftovers, and her mic skills are nonexistent.
AJ's the strongest diva, she should be holding the title. Let Tamina job to Kaitlyn in a forgettable Rumble match, then build to a Kaitlyn vs. AJ title match at Elimination Chamber. With the title back on AJ, start to overhaul the Divas division around her. I'd start bringing in new Divas immediately because the few they have aren't very good.