I've been beating the Varland drum for a while now. No reason to believe it precludes future starting for him and its the only way he can make the postseason roster without a catastrophe. He also seems like a guy who can really pump it up in a short stint.
Paddock would be a natural fit as well. Meada didn't come back last year because the team tanked. Had there been a playoff run Meada would have gotten a look and I don't see any non-medical reason why they wouldn't give Paddock some hitters. How he looks and feels decides how far it goes. If he's on track bring him back.
Kuechel is a no. Can't strike anyone out, struggles controlling the running game, opposite of a firefighter. I can't think of a single game situation where I would want to use him our of the pen. I'm good with him hanging around for a while, making spot starts to eat innings and setup a post season rotation but I can't see him making the postseason roster.
Meada is pitching too well to fool with. Depending on how Ryan comes back the rotation will be interesting. I could see him piggy back with someone but he needs to stay stretched out.
Paddock and Varland would be enough to provide real options, just like making a trade™️. I still think the only way to make a run this year is to pitch our way through and we might as well throw all the arms at we can.