I do think they miss him a little, however difficult he might have been to deal with. The UFC basically bought the WFA to acquire Rampage after he left Pride. In Pride he was an exciting power wrestler/brawler who was a compelling personality (if at times offensive.) He had some fire at the beginning of his UFC career, but he seemed to plateau quickly and actually regress as a fighter. His truck incident and his feelings of being betrayed by Juanito caused him to lose a step, and then finding out that being a pretty one dimensional boxer in a league full of wrestlers and quick strikers pretty much put out the flames of effort from him. Then just came the excuses and complaints, warranted or not, which didnt help his stock with his bosses or the fans.
The UFC stuck by Rampage through a lot of public embarrassment because they had a soft spot for him, like they do for Nick Diaz and for a long time did with Tito Ortiz, who are all great personalities and inconsistent fighters. Dana White and the Fertittas seem to really give that type of personality a lot of leeway and extra chances.
Short answer: yes, they might probably miss him, but more than likely are happy not to deal with him at this point in his career.
