1. Good question. I had to think about this for a bit. It's a difficult question for me because I download so many different kinds of mods that I couldn't think of any specific patterns. Now that I give it some thought, though, I like bundled mods. Anything hinting at lots of content like "overhaul", "redone", or something that suggests a complete, expansive mod is much more attractive to me than a mod that appears to be incomplete or only changes small things. For example, "Skyrim Flora Overhaul" sounds much better to me than "Steel arrow Retexture". Also, anything with the word "fix" in it, for obvious reasons. 2. I like mods that add difficulty, implement creatures, weapons, spells, etc into the game in a way that feels natural and immersive (such as adding any of the aforementioned things to leveled lists), changes gameplay mechanics, or improves graphics. Yes, that covers a majority of everything on the Nexus, but I'm sure you'll find that to be pretty common. With Skyrim modding, you have the ability to do just about whatever you want, so most people do. 3. Compatibility is the most important thing for me. If there are two mods that do similar things but one of them looks like it would be more compatible with other mods I use, I'll probably go with the one with better compatibility. For example, that's one reason I use SkyRe over Requiem. Second is customization. Maybe it's superficial, but I like mods that allow to customize the settings. It gives a sense of control over what I'm putting onto my game. Modules and MCM's go a long way for this. That's another reason I use SkyRe over Requiem. I've already said that I like big mods, so aside from that it just depends on what the mod promises to do and whether or not I think it's worth adding it to my game.