We are frequently asked how to add plugins and themes that are not available in the system to a Glow Blog.
In a WordPress multi-site system plugins are added by the Network Admin not individual blog administrators. We have added plugins and themes regularly as part of our upgrade and maintenance process for Glow Blogs.
We gather Suggestions for the next planned release, you can add requests for new plugins or themes there.
These requests need to be reviewed and tested for performance and security. This takes time and has a cost. Some WordPress themes and plugins are not comparable with a multi-site setup and some many have performance effects or security implication that would prevent their deployment on Glow Blogs.