Nay. mostly because they overstayed their welcome and their culture looked pretty awful, too. I could have gone with more Seska - even though she was predictably and unvaryingly evil she was so good when she was bad! I felt her mind made her an excellent foil for Janeway - Janeway mostly had to throw technobable at episodes to fix things - I don't think she got to think about thge essence of good and evil often enough. The Cardassians as a whole were a worthy adversary much more so than the Kazon and the rest of the ilk VOY had to shake off.