Would be a comfortable way of getting script updates to coworkers.
@Markus, i have started making Adobe Addons which contain the .atn files. Then sharing the Addon with colleagues. It means i can push updated action files out to all the users easily. Handy workaround until Adobe improves syncing through libraries.
I would really love to have the option too to add/share actions to My Library. My department in my company uses a lot of actions and to be to share them via the Library would be a huge help. I could just send new employees or people with new computer a link to my Library and they could in go download all the actions we use. I hope Adobe really adds this.