Andromeda had a great concept.* The first season was pretty good! After that, it was diminishing returns, and it really fell off the cliff in the final season.
Concept was Roddenberry's strength, after all.
Sorbo, unfortunately, ruined it. Not with his acting - in his producer role. Robert Hewitt Wolfe was co-exec producer and showrunner for the first season. Sorbo didn't like the direction they were going (which, by report, was that the show didn't center so much on his character and have everyone bow to his awesomeness). As Sorbo took on exec producing, Wolfe left. One can see the changeover in the second season when they ran out of Wolfe's scripts, the quality drops like a rock.
It is interesting to watch Star Trek: Discovery take up the general concept and run with it in the most recent season.