The two trades I could find for big name position players over the last two years are the Dodgers getting Trea Turner + Max Scherzer and the Braves getting Matt Olson. The Dodgers primarily gave up Keibert Ruiz and Josiah Gray for both Turner/Scherzer. Ruiz was 38 on the most recent top 100 and Gray was 68. Ruiz had a lot of helium early on but had a few down years. He probably only kept his prospect clout on lists because he was in the right farm system. Both those guys are probably at least slightly better prospects than Frelick/Wiemer/Small, but Turner and Scherzer are both better baseball players than Reynolds/Mullins/Laureano by a significant margin. It's tough to know what percentage of the value to allocate to Turner vs Scherzer.
The other trade being the Braves getting Olson. The A's got Pache, Cusick, Estes. I think it's beyond debate to see we have plenty of prospects in the range of Cusick/Estes. Pache is a premium defender that can't hit, at least not yet and hasn't been able to for a while. He profiles as an extremely useful 4th outfielder or 2nd division regular, unless he starts to hit he'll never be valuable as a starter on a contending team. Matt Olson is not that far off those 3 guys from a value perspective before his extension, and we definitely can match that offer. I think you're probably overvaluing all 3 players above and undervaluing our prospects.
Also, it's hard to argue the Sabathia trade didn't surpass every expectation. The roster floundered in other areas, but the trade was an overall successful move and we did get to the postseason for the first time in forever...and without him we don't.