I've always enjoyed Not Going Out, but I think it'll feel like a different show, now that Lee and Lucy are parents.
It's a similar situation for Outnumbered, I'd say. I thought that would have ended years ago, perhaps after Series 3. I've never felt the show was quite as funny after the kids stopped being kids, as that was the whole foundation of the show.
How Outnumbered will work now Ben looks to be bigger than the rest of the family put together remains to be seen. Might be best just as a one off.