From the reddit (I really hate reddit please don't let be the main source for information)
I'm really curious how this isn't going to completely screw me as someone who wants to play on my own. Has FDev offered any explanation?
Multicrew uses the Wing system, and has 4 roles: Helm (piloting), Fire control (turrets/weapons), Countermeasures (shields, tactical), Engineering (sensors, navigation, repairs). Roles are balanced so that a fully-crewed ship is on par with 4 CMDRs in a wing.
I'm really curious how this isn't going to completely screw me as someone who wants to play on my own. Has FDev offered any explanation?