Speaking of toasters, we also dug up a Man of Iron and it's a PC now (this was a large factor in the Admechs' decision to send a goddamned factory ship at us).
We're going to try and replicate the MoI, but we're definitely not going to make AI controlled factories. That's what went wrong last time, after all. In general, we're going to try and design our army/regime with as few load-bearing intelligences as possible, so that we don't have a giant fucking rebellion on our hands as soon as Chaos corrupts one goddamned factory/primarch/etc.
Of course, this means a lot FEWER MoI even if we do succeed at replicating them. That's why we'll have to breed astartes as well, instead of just relying on robit.