I suppose for me I'm fairly interested in seeing what exactly its going to be. If it is a survival game that's fine and I'll probably get it because I enjoy building stuff in those. I probably won't preorder it though because I only preorder stuff when I have a reasonable expectation of what I'm getting.

For instance Obisidian makes good single player RPGs with a usually strong central plot and a ton of bugs at launch so if they announce one of those its a pretty easy buy because I know I'll probably like it even if it is a bug ridden mess at launch. If Obsidian announced they were making a strategy game or shooter I'd take a wait and see attitude. Bethesda on the other hand does big open world exploration single player RPGs that I always enjoy... which a multiplayer survival game isn't so yeah I'll wait and see.