After drafting another SP, Shiner doesn't really need reliever/opener Miguel Castro. If you're interested, he could be had for a better reliever (particularly a lefty) and/or cash. After adding so many picks, Shiner would also sell off their two least loved prospects: Hudson Head and Christopher Morel. I suppose packaging picks to trade up could also be a consideration at some point.
Meanwhile, Surprise has too many damn prospects and wants to make room for new ones. They would sell any of these highly touted but recently disappointing youngsters: Hunter Bishop (SF-OF), Luis Garcia (PHI-SS), Kody Hoese (LAD-3B), Robert Puason (OAK-SS), Luis Rodriguez (LAD-OF), and Juan Then (SEA-LHP). As alternative to cash, the team could also use some major league help, particularly at 3B, C and maybe OF. If there aren't any takers, there will be some extra picks, but I'll wait to cross that bridge later.