Well, I'll probably be repeating what alot of people say, and I don't actually have a Pleo of any kind yet, so forgive me if I actually mention a real function, but:
1. Proper variation on skin colour. The green, pink and blue are cute, but maybe a bit more variations, like maybe a light brown one, or a grey one?
2. Thatfollow-me function Talon mentioned. That would be very cute. I'm sure they could work it into the ID card, so that they sense where its owner goes and follow them.
3. Fears. I know that they do get scared at times, like when they detect the edge of a table, or whatever, but how about programmed-in variations, like with the varying personalities they talk about? So that one may be scared of heights, or the dark, or loud noises, or whatever.
4. Dancing. I heard about the Dance learning stone, and correct me if I'm wrong, but with that one, you can just give them a command to dance, and they'll dance. Maybe if they could make some way for them to dance to any music with a recognisable beat. It picks them up on microphones, detects the beat, and synchronises its movements, so it wags its tail, or bobs its head, or even sways its whole body to the rhythm. Just imagine how cute it would be to see a Pleo dancing to swing jazz! However, if this is basically what the Dance learning stone does, disregard what I've just said,
