There are tweets I wish you could fave multiple times. Unable to sleep one night, here's my proposal for the ability to fave a tweet multiple times:
You get [x] faves total per hour. (I can see, out of the gate, that this wouldn't be tenable, but stick with me on the premise at least.)
You can fave tweets multiple times, let's say a limit of 3 times.
If you unfave a tweet, you still lose that fave for an hour. Put another way: that fave slot recharges after an hour. (Fave slot!)
If you unfave a tweet, you still get to fave it a total of, say, 3 times.