Any Chance Of Adding An "Add To Favorites" Features now
Suggestions
Actually, I think that if you clone the module correctly, and catch and change all instances of 'jrLike' and 'like' in the code, templates and language strings, it should just show in the menu dropdown.
One thing to consider when cloning though is that there is a dislike option in the Like module. You may want to take out the code for that in the new module, unless, of course, you want a 'not a favourite' option

Alternatively, less to code in and just don't enable the dislike option in the new module.