That would add a no-brainer. That's because I'm used to work with LoadFromFile, LoadFromStream, SaveToStream and SaveToFile from a lot of components. (Not only Stream descendants!)
Now i have to think "Oh yes, it's a TLobLocator, i need to use CopyFrom". I don't find it user friendly, especially with so less effort at your site. (So do I suppose)
I could inherit it myself, but i don't like it in this case.