Yeah, one of the saddest falling aparts (for giant fans) was Jim Ray Hart.
And I dont think we fleeced the Royals. Yes, it turned out badly for them, but unlike many on this board, I believe a trade is good or bad when it happens. Not "let's see how he develops".
If you trade Hal Lanier for Willie Mays and Mays slips and falls at the airport it doesnt mean the trade was bad. You got a steal in the trade. The slipping was unrelated and unpredicable.
Or more poingantly, if you give away your (supposed) 2nd best pitching prospect (alderson) for a two month rental, THAT IS INJURED AT THE TIME, that is a bad trade (assuming you are not fraudently concealing any injury to the pitching prospect). It doesnt become a good trade when it turns out later that that pitching prospect has lot all his ability.
Same with Wheeler. You can debate if trade was good or bad, but that depends on if Wheeler has value now (potential times risk-weighed probability of developing that potential), not on if Wheeler ever does develop. Whether Wheeler goes on to win 1 or 301 games in MLB is irrelevant to the wiseness of the trade.
Back to J. Sanchez. At the time, no one EVER though of Melky hitting .352. He had had like only one half season of good hitting. On the other hand, J. Sanchez still had a lot of potential (at least to many of us), and we needed him for starter depth.
We have been lucky this year (our 5 starters have started all but one game). Imagine us with a starter injury this year. Or imagine what you'll be saying 4 weeks from now when Zito loses his 5th straight. Or imagine what you would be saying if Timmy had continued his downslide. We would need another starter in those cases.
We needed J. Sanchez this year. It is pure luck that we have had no starting pitching injuries.
NO ONE predicted Melky would hit .352. Luck and unpredicted outcomes have NO bearing on whether a trade was good or bad.
On the flip side, the one saving grace on trading J. Sanchez was that we picked up a guy in his contract year. That means that this career .280 (or whatever) hitter just might hit .352. No one predicted that, but it is believable since players do better in career years.
Other than Melky MIGHT hit .352 cuz its a career year, the J. Sanchez trade was bad ("you can never have enough pitching"). The fact that J. Sanchez then imploded is irrelevant to the wise ness of the trade. The fact that Melky hit .352 is irelevant to the wise ness of the trade (unless you are playing the "he's in a contract year" card, which most people dont play as often as I do).