While Alien Force was a surprise by adding much more depth to the characters and expanded the world, Ultimate Alien continued in the same vein but didn't add enough to reach its full potential. The angle of having Ben's identity revealed to the public and how it affected his sense of judgement was quickly dropped and not picked up later.

But I enjoyed the new ultimate alien forms provided by the ultimatrix and as I stated earlier the same qualities of its predecessor were still there. Much to enjoy and appreciate by longtime fans.