I love the way the main cast meshes, especially the kids. I love the concept behind the show, especially the setting provided to work in. So why am I almost certain that we will never see a second season? It has to come down to the writers, the plots are kitschy and laborious, and try as they might to develop new aspects of the characters, they remain incredibly shallow. It appears to me that whoever is behind the series is afraid that the 'new and shiny' of aliens coexisting in a suburban environment (how many seasons long was A.L.F.?) is going to wear off, so we have to be thoroughly trounced with it at every opportunity.
If they can't get on with the show and start making the plots a little more engaging, the characters are going to drown in inanity.
If they can't get on with the show and start making the plots a little more engaging, the characters are going to drown in inanity.