The reason people tend to dislike Season 4 is more SciFi's fault than anything. After the awesome arc that ended Season 3, Skiffy insisted that the writers go back to a more episodic format. This was annoying because all we as fans really wanted was to get back to the wormholes! Unfortunately, because of the new format, we had to wait almost half a season before we really got back into the big story (starting with Unrealized Reality)...AND THEN they did that stupid winter hiatus thing that SciFi is famous for, so we didn't get the second half of Season 4 for several more months!