Strong's always been a great in-ring guy. His problem is that he can't talk...at all. That will always limit his ceiling, but at least he can go out there and consistently put on four star singles matches. That, to me, is value. You need workers like that. You can always put them against someone who can talk and carry the feud on the mic.
I wouldn't say forcing it. It's forcing it when you send up guys who aren't ready yet, like Corbin and Crews, both of whom could have used at least six months more time in NXT. Roode could have debuted on the main roster and he would have been fine. He's a well-known wrestler and they gave him a star's entrance. DIY are probably ready as well. They're two of the best workers in the company, Gargano is wildly over, and both Raw and Smackdown's tag divisions are very sparse. Smackdown in particular could benefit from a couple of legitimate teams like DIY and the Revival getting called up, because right now it's American Alpha and fucking nothing else.
As for Dillinger, the dude's been in WWE developmental for like fifteen years now. He's 35. If he's not ready now, he never will be. He's finally found a great gimmick and gotten himself insanely over, and that has carried over to WWE crowds as well as seen in the Rumble. They could easily debut him and push him straight into a mid-card title and I think it would work. He's not some raw guy like Corbin who is still learning to wrestle or a green guy like Crews who can't talk. He's good at both. Not spectacular, but you don't always need to be.
What they should have done was debut Dillinger on Smackdown and had him feud with IC champion Miz. Dillinger taking the title off of Miz would have been fantastic.