If the file is too big, the Changes view displays a message: the file is too big and I have to double-click on the file to open it in File Compare.

Imo the option to Force Text should be available in the File Compare window. It's a feature inherent to comparing files. Changes wiew is for taking a quick look at what changed in a file. I use File Compare when I want to look in detail at all the changes and maximize the screen space. I think I should be able to Force Text there if I need to.

As a principle, File Compare should include everything that Changes view includes.