The script was a really good remix of a lot of the Zucker movies of the era. A lot of really great gags (and some that flopped), but it was more of a nostalgia piece for older folk than something that can work as a new revival.
The script also called for lots of really clever visual gags that the cinematography couldn’t cash. The decision to film it as if it was a contemporary thriller was clever on paper, but it made the visual gags awkward and forced, unlike the cinematography of the original show and movies that allowed for the viewer to seek them out in the background of shots.
Liam Neeson was inspired casting, and he did an okay job in general; he actually seems a lot older in this movie than Leslie Nielsen did in his.
I think it really could have been better, but in the end it was just in-between fine and good.