Really dropped the ball with the spin off.
I liked Amanda well enough but her character worked best as written.A reckless somewhat selfish love interest/sometimes foil for the lead.Also most of her history had already been covered on Highlander so not much play there.
Now Methos on the hand.IMO the most intriguing character on the show.The one character you could never quite figure out because he was always so guarded about who he was.From episode to episode he would shift between coward,hero and completely indifferent.Not to mention 5000 years of barely tapped history to play with.Methos seemed like the obvious choice for the spin off.