My application uses multiple subdomains. Currently, urls are generated as "/fanstatic/whatever", which means that if the app takes a user from subdomain a to subdomain b, resources like jquery will be unnecessarily downloaded again.
I looked at the library_url method on NeededResources and while it can take base_url into account, it doesn't have any functionality for hostnames. Is this in the works? If not, how would you like to see a patch for it?