The two top Mets position prospects (not considering Milledge a prospect now) are outfielders Carlos Gomez and Fernando Martinez. An update from
MetsBlog says both are starting their respective minor league seasons hot with the bat.
Gomez in Triple-A New Orleans is 10 for 28 with 5 extra base hits (one triple), 5 stolen bases, 5 R and 4 RBI.
Martinez in Double-A Binghamton is 6 for 17, with a double, triple, HR and 3 R and 1 RBI.
This should be a story worth following. Along with Milledge, the three outfielders are young and have a ton of potential. It's possible that should a worthy pitcher become available at some point in the Summer, Omar Minaya could dangle one of them as trade bait. Just a possibility is all I'm saying.