Personally, I think both the puzzle and the hide should be interesting in some way. Now, if the final is going to be particularly demanding (e.g. evil hide, long hike), I think it's nice if the listing gives you an idea of what you are getting into. Same applies to multi's. I much prefer to have some idea on the number of WPs and/or total length. That said, trying to make the puzzle fun is what I look for in puzzle caches more than anything else.
PhilNi