Unfortunately, even if the show isn´t called "Dylan Hunt" but "Andromeda", they approached Kevin Sorbo with a promise it would be "his" show. I don`t know why, I never watched Hercules, and I am not particular fond of the actor - it must be an american (or american TV authority) thing.
Tyr was a great character, and I think I loved every scene with him. If we are lucky, it was not only his character but also the actor, so if he begins to star in another TV show or a movie, we will be able to enjoy his work from there

.
In fact, I think all characters in the show were really great, expect perhaps the character of Dylan Hunt

. (Well, this may be a bit to harsh - a Captain building up his old empire is something we didn`t see in other TV shows, did we?)
But anyway, if Andromeda is slowly degrading to a real one-man show, and if it fails due to this, I would be disappointed, because it has great potential. The first seasons proved it.
Mustrum Ridcully