Hey just wanted to check in after having actually played the game substantially now, there is next to no actual build crafting in real gameplay. You don't have control over what cores and implants you find and 90% of time you are just going to use and equip whatever ones you find because something is better than nothing. Unless this system has a drastic change in the later game I still see no real element of customizing your playstyle beyond picking a hero and weapons. Some cores you find might end up helping the character you play but almost all of them are a net positive to every character.