Showcasing guys who can't normally get into the lineup isn't really a thing. It's just a dumb media narrative that reporters use because "OMG THIS COULD MEAN A TRADE!!!!" is more exciting than "hey, Goodrow just got into a game finally either for line shuffling purposes, because someone needed a day off, or just because we have to toss our 21st-23rd men on the roster the occasional bone instead of just leaving them in the pressbox for 6 straight months"
This is right up there with guys reporting "anonymous sources" or turning some other reporter's idle speculation into "rumor: team might be looking to do X" in the pantheon of lazy media ****-posting.
If a guy's getting "showcased" he's already in the lineup. And if he's not good enough to get into the lineup, he's in the minors.
No way are you going to make a roster move to "showcase" your 13th forward just so you can get a 7th for him instead of futures.