I voted for option 2. Cyradon hasn't really grabbed me as of yet (not to say that it won't after additional material is added), so I'd like to see some other settings to choose from.
I would LOVE a horror setting in HARP. Whenever I read Nightmares Of Mine (usually around Halloween) it makes me want to run horror games. I love the HARP system and would drool profusely (buy it as well) if a catch all horror game was made for it! I'm a huge fan of old WOD but not big on White Wolf's system. Nightbane by Palladium Books is another favorite of mine! Again, I prefer HARP as a system any day. I would also be happy with some kind of Horror Toolkit with guidelines and rules specific to HARP regarding the horror genre in multiple settings. Those are always fun!
Low Fantasy, as I have seen mentioned a few times, is also one of my favorites. I hate running a high magic game. I usually leave a huge portion of the spells out of the games I run. I like that kind of realism as it gives me more room to make a scary situation stay scary. When your character can't just cast a flying/ teleport/ walk through walls kind of spell, I have the ability as a GM to create a more dramatic situation with less. It makes that wall you've run into a possible plot device instead of just an easy snap of your fingers. This is just my preference/ style, but that is one major thing I look for when I personally think about buying a pre-made setting. Can the PC's just mount unicorns that teleport them to the other side of the world in time for breakfast with the king of the blueberry people? If so, I'm not all that interested. Middle Earth is a great example of what I am talking about!
I find Steampunk fascinating, but admit to not having much experience with it. It looks really cool but I'm not sure I actually get it. I really like the look and would probably enjoy it if it was explained clearly.