Cade Horton was just promoted to AAA not too long ago. He's pitched 18 innings, has a 7.5 ERA, given up 4 HRs, and is walking 5.5 batters per 9.
Ballesteros has played what? all of 1 week in AAA? What's his position? Is he on the 40 man?
Alcantara needs to be traded more than he needs to be promoted to MLB. The guy has a 106 wRC+ in AA with 1 option year left. What is he possibly going to do that bumps Bellinger out of CF? Why would you want to promote him when he clearly is not ready and is one of the more obvious trade pieces this team has.
Owen Caissie isn't on the 40 man and the position he plays isn't exactly a glaring need right now. He has a 117 wRC+ while having a .373 BABIP. He's not exactly pressing the issue either.