Yeah I don't know what it is about monks, but I know a big thing is the fact their attacks don't show the fist weapons enough for me. I deleted mine for a second hunter a year or so back, but I restored. She will probably collect dust once I get Ban-Lu. Most of these alts will honestly, I don't play them. I usually go with one main (hunter of course), then a primary alt (DK) and then a Leather and Clothie to gear up enough to do mog runs with increasing ease.
Much to my surprise, levelling my warlock has made me really like him, I'm just not pulling the numbers yet. I originally had an SPriest and I HATE the way it plays (I want my alts to be lazy to play

). I'm just glad dauntless allows for a super easy way to get up to 850 ilvl.
As for leather, I chose Rogue and though I love the class mount. Although, like Xella mentioned, I am not looking forward to sneaking into Horde towns to assassinate people since my realm is like 238572357 horde to 1 alliance. Truth be told, I'm not really feeling any of the leather classes. I would probably be more into my feral druid if mog mattered for them. Maybe I need to give my DH more attention, I just don't care for their whole shtick. Bah!
(Veph, your Lalathin mog is much MUCH more striking than the one I cooked up, wow!)