Best case he's Kevin Stocker, worst case he goes back to Allentown when he cools. But his "emergence" also opens another 40-man spot if needed (should they DFA Torreyes at any point). If his future is still bench player he can just step into the role, he doesn't need ABs in Allentown.
I'm not sure the pitching is that much worse than expected. Moore is, yes, but they knew it was possible - even likely - that only one of those guys would work out. If there's a list of expected WAR in the GM's office I'm sure it included getting 0.5-1.0 from the 6th starter and then upgrading in July.
Whereas I think the defense is a much bigger concern than expected. Nobody expected it to be good and nobody expected Gold Glove work at SS or CF, but they didn't expect Didi to be an active negative. Nor Cutch.
Either way, the offense and bullpen needs to be able to win some of those starts. Bats couldn't do it this weekend, and 'pen is a bit thin. Should have had it Friday though.