Let Pull Distribution Point really work like Clients or Branch DP in ConfigMgr 2007
Pull Distribution Point require a Site server to initiate a TCP connection to them before they receive a push-notification to start downloading content from a source. Which means that firewall/network wise that it's more difficult to manage in high secure environments.
And after all: it doesn't make sense why client do initiate and use a seperate communication (Client Notification) channel using pull-mechanism and the pull-DP itself doesnt...
So, please let Pull-DP themselves initiate and setup the "Client Notification" or communication channel for push-notifications from the site server, just like the Clients do and old Branch DP did.