I had the Morrigan romance mod so I could romance her as a female warden, and I really enjoyed her romance all the way through to the ultra-happy ending in Witch Hunt (which didnt even require a mod, which was nice), that was obviously the happiest of the happy endings for the romances, but most of my playthroughs I picked Leliana, because she was just so awesome. Even playthroughs where I intended to pick Morrigan in advance, I'd tend to end up with Leliana. But that doesn't mean I wouldn't like another romance like Morrigan's, I sure would, the romance itself was pretty awesome, she was just up against some unbelievably tough competition

. You still get a happy ending with Leliana as well, just not quite to the extent of Morrigan, where you track her down and go through the magic mirror together to meet your child that you've never seen before, and you're going to live happily ever after as a family. It sure would be hard to top that, we definitely need more romances like that.