Here's my two-cents. I don't know what all men like, but I do know what I like.
I like to see tons of passion and excitement. I like to see a woman going out of her mind with pleasure. I absolutely need to see her face when she cums, and expressive sounds are great, provided they're real. I'm old enough and experienced enough to know the difference between fake and real.
I like brief shots of pussy and ass. One camgirl's bottom is pretty much like another's. They're not all that exciting after you've seen a few thousand. Every face and every cum is individual and interesting. Include enough of your upper body to show how your muscle tension builds and releases.
A guy's presence in the shot should be minimal, since I'm not interested in him. Cowgirl or reverse cowgirl works for me. Another woman's presence in the shot is great, if she also expresses real excitement and real pleasure. Tribbing is almost always exciting. Double dongs hardly ever work well. Strap-ons are hit and miss. Very few women are experienced enough with them to just forget about straps and angles, to just lose their self-consciousness and have fun.
Please don't ruin a good video with backlighting, glare, poor focus or extraneous sound (TV, radio, video game). I'm not excited by someone getting done from behind while playing WoW. You really can do B/G with one camera if you light the situation evenly, mic it well, put the camera at the right distance, and keep your face and torso in the shot throughout -- and if your having a truly great time cumming till your brains turn to mush.
Have fun, and I'll have fun watching.