Line makers are on it... Props and O/U's they still slip up though from time to time more then on the straights IMO.
I found it much easier to bet MMA just a few years ago.. Fighters are all so skilled and well rounded now in the UFC.. Back in the day fighters were badly exposed for their glaring weakness and just weren't as well rounded as they are today.. It was much easier to see a clear victor back then.. That's my take..
MMA is still very workable though as you well know...