Most mid tier prospect trades get mentioned, later on. When you make a lot of them, you hope or even expect one to work out in our favor. Bloom has made many more that bring us the mid to lower tier prospects than ones that give them away- not the Springs and Mazza were "prospects". The jury is still out on almost all of them, but it is a bummer that one of the few that went the other way produced a guy like Springs.
We have traded away Springs, Chavis, Groome, Mazza, Aldo Ramirez, Scherff, Northcut and a few others.
We have brought in...
Wong
Downs
German
E Valdez & W Abreu
Binelas & Hamilton
Seabold
Winckowski
R Hernandez
C Koss
J Wallace
H Potts
de la Rosa, F Valdez & G Gambrel
Ferguson & Rosier
I'm sure there are more known players I've forgotten.