I like natural positions. I've never really been into seeing the lee in stocks, though I have watched and enjoyed some videos with stocks in them. Bed scenes are my favorite. Also, scenes on a couch or the floor are nice, too. I like for it to look like the lee and ler were just sitting around the house, and for some reason the ler got it in his or her head to tickle the lee. For example, maybe it can look like a guy and girl were hanging out in a room together, they got to joking around, and she ended up pouncing on him and tickling him. For this reason, I've never really been into dungeon scenes, either--though I have watch some videos like that.
When it comes to f/m tickling (which is my favorite, given my proclivity towards being a lee), I absolutely love seeing the female ler straddled on top of the lee. The entire video doesn't have to show her straddled on top of him, but it is a big plus with me if a chunk of the video consists of that. Likewise, I also greatly appreciate seeing an f/m video in which the female ler is barefoot. So if you have an f/m video that shows a barefoot female ler straddling and tickling a very ticklish lee, I'm probably going to love that video!
For some reason, I also appreciate an f/m tickling scene in which the female ler is younger than the male lee. There is something exciting about that. It's not a deal breaker by any means, but I can't help but appreciate it.