Ok, let's say you walk up to your best friend, smiling, maybe even laughing a little because you haven't seen them in forever and a day. Then you stop short and blink, unable to hug your friend, just standing there with your hands on your hips. You apologize to your friend, trying to remember where you put your hug attachment. Meanwhile, your friend has to go RIGHT NOW, and gives you a cheap, old-fashioned text hug. ::hugs you:: Then they poof.
Ok, we all know what I'm talking about. You have to either be wearing something or be sitting on a stationary ball in order to do some of the most mundane social tasks (hugging, kissing, shaking hands, screwing). It gets old when you say to your friend, "Come all the way over here so I can stop massaging your foot and instead kiss your leg." Ok, it's not exactly like that, but you catch my drift.
Since Second Life is a socially immersive world, I think it deserves a bit of consideration to put in some standard social actions. For instance, right-clicking on someone could bring up the standard pie menu, but there would be more and more options such as those listed above. Hugging, etc. To fix the height alignment problem, perhaps there could be sensors on each avatar's body part that is affected, For example, heads and hearts are generally the same distance apart for most people, so the taller avatar could bend its knees or kneel altogether in order to make this move. Maybe if there were a "grab wrist" so your friend can follow option would have a sensor in the forearm.
But overall, I'd really like to see this implemented just to clean up some of the clubs. I like the naughty poseballs as much as anyone else, but when I'm out for a stroll in the park or even visiting someone's house, I don't really care to see "MDOG" on some blue sphere.
The best example I can give is the Sims. I haven't played sims 2, but it's probably similar.
I have plenty more ideas for advanced social options, but if this is at least given some consideration, I am more than willing to support it.