Devs are definitely no fungible, the difference in the productivity, team moral and new bug introduced by just changing one person in the team can be huge.
Even simple boilerplate is done differently by people. Some will automate them, some will do them manually forever. Some will naturally organize to discuss how to limit or improve them, some will stay with the status quo ad vitam. Some will document how to do things, provide templates to limit mistakes and mentor new comers. Some will just do their job.
And that's not even touching the fact some are simply bad at what they do.
In all the successful projects I've seen, hiring the right people or replacing the one leaving were critical processes, not just swapping.
This idea you foster is probably half the reason 2/3 of IT projects fail.
Even simple boilerplate is done differently by people. Some will automate them, some will do them manually forever. Some will naturally organize to discuss how to limit or improve them, some will stay with the status quo ad vitam. Some will document how to do things, provide templates to limit mistakes and mentor new comers. Some will just do their job.
And that's not even touching the fact some are simply bad at what they do.
In all the successful projects I've seen, hiring the right people or replacing the one leaving were critical processes, not just swapping.
This idea you foster is probably half the reason 2/3 of IT projects fail.