I think that K-Meleon is a great implementation of Gecko, and a great browser. Firstly, I love the fact that it is small and fast. It is still not as "polished" as Mozilla though. I'm hoping the 0.8 milestone will be as good as Mozilla. I cant reccommend it as a primary browser yet, but they need people to use and test it. I like it overall. The size and speed give it good points, but the UI is so-so.
Nilson,
Please let us know in our Forums what exactly you think needs improvement. We try our best to meet the needs of our users.