The 1st episode was pretty poor but the cast feel like they are making the roles their own by episode 3 and the wife vs the 2 leads chemistry is working well but it still grates everytime I hear the names "Riggs and Murtaugh" and it isn't Gibson/Glover.
I think the constant reminder of Riggs wife is going to be a downer on the series though, that was one thing that the movie got right - reference it, make an issue out of it, then move past it.
TBH, the show would have worked just as well if it didn't have to live upto the Lethal Weapon name.