Hagane

I don't think that is a good idea. As already mentioned in the article, The Hobbit and Rings of Power are set in a very distanced time periods, so it would be very difficult to join both stories. At most, it would feel very forced.

The best idea in my opinion is to release a remastered edition with both The Hobbit and Lord of the Rings with updated graphics and The Battle of the Five Armies included. Something very much like Tomb Raider 1 to 3 remastered. The original games with better graphics and with the gold edition of each game included that was never released for consoles (only PC).