I don't think Melky for Trout is on the same level as what I proposed. Trout I feel is almost untradeable, but I'm sure certain realistic packages could tempt them like Hernadez, or Kershaw, but now we're really off topic. I don't think Miller, Taveras, Martinez or Wong has the same proven track record as Trout. It's like the package for halladay with Drabek, Darnaud, Gose, didn't really turn out great. Those 3 prospects are still in the TBD aisle. Rasmus was considered can't miss at a certain time and still got traded. I think their are two sides to the coin and as prospects, you're still waiting on potential. Trout is no longer a prospect and is a proven commodity, while Melky was PED and only had 1 spectacular year under scrutiny and is nowhere close to Reyes and Bautista. So you overexaggerated quite a bit, but I understand the how much St. Louis would give up, and that's depleting their farm. I don't think they would do that like the Jays did last year.
We traded as of Nov 7, 2012,
#1 (Darnaud), #2 (Marsnick), #3(Snydergaard), #5(Nicolino), #8 (Hecc) and former #10(woj 2012 ranking), former #5 (alvarez)
for 1 Cy Young, 1 all-star SS, 1 former cy young, and 1 aging all-star SP.
Cardinals as of Jan 2013;
Taveras #1, Miller #2, Martinez#3, Wong #5
for 1 perennial all-star RF, 1 all-star SS, 1 solid closer.
You're right that is a bit much if we're ignoring Marlins salary dump and just look at talent and maybe we'd have to add to our package like Delabar (all-star reliever), Happ (#5 pitcher), Low A prospects.