Building an interface to allow people to directly pull Tealium extensions from GitHub would be great. What I would really like to see Tealium do is allow those of us with GitHub accounts to do additional functions such as fork a code base, submit pull requests, and so on without having to leave Tealium.
Either way, supporting open-source sharing of things like extensions could be really beneficial to the community as a whole.
I wonder how Tealium would look at this from a support standpoint. If open-source extensions became popular and in turn lowered the amount of custom code being used across the customer base, I would think it would make their customer support job easier. Tealium support would become familiar with the commonly used open-source extensions instead of having to dig into and learn the code that the customer wrote themselves every time there is a problem.