Speaking of keeping things in perspective, remember the original STAR TREK (I am assuming you are talking about the original here) ran 80 episodes! By todays standards that's 5 seasons. Considering most new prime time shows run short seasons their first year (16-18 episodes) and around 22 epoisodes per year after that. By todays standards a 5 year runs is a success!Remember, if STAR TREK had been a ratings success, it would have probably run as long as GUNSMOKE or HAWAII FIVE-0!
Also, let's not forget that the original series has spawned 4 successful additional series! All of which ran well past the 5 season mark, except for "Enterprise" which is still in production, and a host of movies with the original cast!
Also Hawaii Five-0 and Gunsmoke have never been as successful as STAR TREK in syndication.
All I am trying to say, is that if you want to downplay Farscape, comparing it to the most successful franchise in television and movie history probably isn't your best bet.
BTW, Farscapes ratings were NOT on a decline, I googled it. Farscape had a 1 million plus steady viewership! Just check here:
Now, about Angel...