I think joining Friends and Skill could be interesting.
I have not worked this idea very much, but I think it would be nice if Glitches could teach each other and exchange knowledge. One possibility is that Glitchens who already have a certain skill could help Glitchens learning that skill - and it would be even nicer if it were restricted to Glitches that are friends with each other. It could be a new way to speed up learning time.
Another possibility would be to have, besides the basic skills that all Glitches have, some specific skills that could only be learned with the help of other Glitches - something as areas of specialization of the basic skills, like the candy making I saw in another topic.
Need to give this idea some more thought, but was just wondering : )