Fixed
All working now with iOS 11.2 and indeed with the new TV app :)
Yes, back to home sharing after installing iOS 11.2 on my iPad Air2 and High Sierra updates on my MacBook Pro! While I'm thankful, what does it say about a company that lets one of its own features languish for the better part of a year? And given what we have gone through, I'm wary how long this will last until the next "update"? In the meantime, I do appreciate this valuable feature.