If Ramirez isn't a 120 wRC+ bat, than he isn't an Ian Happ comparison, though. So we're either moving the goalposts, underselling how good Ian Happ has been, or overvaluing Pedro Ramirez.
If you want something a bit more realistic to what I think Ramirez is right now? It's whatever Brian Rocchio is putting up. A 106 wRC+, a K% around 15% and a walk rate around 7%. He's hit nine home runs on the year. That's roughly where Pedro was for much of his MilB career. His xwOBA on the year is .297 compared to Pedro's .299. Maybe you move a few things around, but that's about a line I think I'd expect for Pedro Ramirez, especially at age-23 when you don't curate the PA's so much, the league adjusts and he settles in.
But that 106 wRC+ puts you in the 20's when you look at LF'ers with 150 PA's at the position. And that's where the issue is for me. Whatever defense you think you're gaining in LF, you're throwing away with the bat. And I don't think that's the worst case scenario, but that isn't worth prospect hugging him this year. I can see that being servicable, especially with a strong bench, so it isn't so much "it can't happen" only "let's not overpromise" or in this case, expect too much. It's alright, but not something you can't replicate.
A lot of this feels like you're taking a square peg and putting it in a round hole. It's a lot of "well maybe if he does this" or "maybe that". But that's the same argument for Matt Shaw. Shaw's xwOBA last year? .302. What's he doing this year? Putting up glove and base running value to offset his bat in the OF. That's what I meant when I said they're equal value. You can personally just like one over the other, but when we get to brass tax, they're pretty similar.
And a good reminder, Shaw hit better than Pedro Ramirez at Triple-A before he came up. He had a 144 wRC+ in Iowa. He walked more than Ramirez. And had a longer history of power hitting.
I just think when you boil it down, it's 6 in one hand, half a dozen in the other.