I agree. I like an evenly matched rival, that was what made the Klingons great. They were like the twisted Federation, instead of creating a equal and diverse nation they conquered them instead.
I have to admit that was the problem with the TNG, they were no longer the bad guy and they went down the path of "honor" and the writers of ENT took their cues from the TNG. Realistically the DS9 Klingons alone seem completely unable to develop warp drive or anything more complex than a pointy stick.