I was musing on this topic a bit today, and discovered more reasons of why the currently existing Spirit Beasts just didn't click with me. Forgive my random tangent here, but it sort of fit with this thread anyways. ^^;
My problem was overlooking the original impressions I had of each (which was that I didn't want any of them). As the thrill of the hunt grew in me and I became determined to own all 4, I started making up reasons as to why I needed them, or blatantly ignoring my past reactions. xD
Loque'Nahak ~ When I saw the first leaked images of this cat I was stunned by the beauty and by the unique model. However, even then I didn't particularly want him though, I just admired him for the special pet he was. I was never a 'cat person' in WoW, they never seemed to click with me, and Loque's colours weren't exactly ones that I would be drawn to (*coughs and shoves Azzam behind her back inconspicuously*). When I think back on these original impressions, I realize that I still hold to them and I don't really need Loque.
Skoll ~ I actually loved the concept of this Spirit Beast. The blues were amazing, and I was thrilled by the lightning. However, the model itself was something I couldn't get past. Later when I decided to tame him I told myself that all of the cool traits surpassed the model's shortcomings, but really I was just fooling myself into loving it. I still cringed every time I saw his gimpy run and walk, or the dislocated jaw. I just pretended not to see them, but the fact is I could never get past that saber worg model.
Gondria ~ This would have been a pretty good candidate actually. If I were ever to bond to a cat in WoW, it would most likely have been a saber model like this (*coughs again and pushes Azzy away*). The first images I saw of Gondria really captivated me, but then I saw her in game. She was a great deal...pinker than I expected. In fact that colouring wasn't nearly as dark purple as I had originally anticipated, so altogether she just came across as a bit too feminine for my tastes.
Arcturis ~ Pretty bear, but I've never exactly been drawn to bears in the game, and the ghostly one did nothing for me. Then, suddenly, as I was on my Spirit Beast spree I formed a story to incorporate my single bear pet (Grudge, diseased black bear) as a reborn form in Arcturis. Later on I realized that the diseased model was what I truly loved, and though I'm still fond of the story I wrote, I'm going to backtrack and just get the original Grudge back.
So, in the end I suppose I just found that I'm susceptible to being blinded by shiny things and the addiction of hunting down the rares, but in the future I think I'll remember this and stick by what my real appeals are.

I'm sure there may be a Spirit Beast in the future that I'll absolutely
love and need to get (for example, a reptilian one), but I never needed any of these ones so I'm happier without them. x)
/end random musings