The first movie definitely worked the way they intended. I don't hate the second movie, but it doesn't feel like a movie. The first film felt large in scale and bigger than a regular episode, where the second film felt like a 2 hr episode, and at the time, that was to be our first time back with Mulder and Scully and could have been our last.
If nothing else, I'm grateful to Season 10 and 11 for ending our Mulder experience on a better note, and I have to say, while somewhat a cliffhanger, 11 ended in such a way that if we never get answers, I'm ok with it.
I will say, I thought part of the cliffhanger was going to be wondering if it was Mulder or William who as shot, surprised me when they answered that clearly. It was nice to see Mulder finally pull the trigger on CGB after all that he's put him through over the years.