I think allowed knees to the head on a "grounded" opponents would help with seeing more activity on the ground. Right now there's a lot of positions, especially against the cage (which seems to be where the majority of a lot of fights take place in modern MMA) where a fighter can hang out and feel safe which leads to the stalling. If there was the threat of eating knee strikes then fights would be more wary of stopping in certain positions. Also I always disliked how fighters would do the whole putting their hand down on the ground to avoid knee strikes rules exploit and how some fighters who end up taking a knee in a "grounded" position will start flopping around the ground like soccer plays that get fouled do.Would like to see the UFC change their rules to encourage more activity and discourage stalling. The way it is now, a fighter can just grab a hold of their opponent and hold them down for basically the whole round without doing anything. The refs are super slow to intervene so we end up watching two dudes hug and play patty cake on the mat for 5 minutes.
Grappling should be a part of the sport but stalling shouldn't. Maybe allow for more strikes on the ground to make the "position battles" less boring to watch. This last card was hyped up big time but ended up being a huge dud, several fights where there was endless stalling and little to no action.