The Reds are in first place and ahead of the Phillies! They aren't trading Diaz.
Kind of doubt Ohtani gets traded either, but you have to at least consider him if so. Still don't think he'd stay in Philly long-term and that makes it harder to overpay at the deadline.
I consider Goldie but he is not without issues, in terms of his age and salary next year. But it's only one more year, and all indication is Harper will return to RF (possibly even this season, eventually) so sure, you consider that too, even if it means more Schwarber in LF for another month or two.
But your dreams are for teams that legit have a chance to win 95 games and a division. Teams that are trying to win 86-87 games and then get lucky, like last year's team, can't go crazy with trades. And very few of them actually are season-changing or decade-changing (yes Ohtani would be but he will not do an extension in July.
I like Candelario but that's also because I am really not a Bohm believer. They'd be a great platoon, which functionally makes Bohm a bench player.