There is new content coming a few more times this year, we may see some of these crop up, I hope so. I feel the anniversary rewards missed the mark and I'm hoping other new content rewards don't make the same mistakes.
The proper thing to request is for the Devs to add a TS Trophy only tab which is always on to the Tribute window with 10 slots. That way we can put all our TS trophies in it and not have to remember that we need to change between them before doing combines. But you have to change them, and remember to change them.