In my opinion, it makes little sense to implement offensive and defensive schemes that are difficult for your players to pick up. You’re supposed to be making it difficult for the opponents. If you can’t bring in a rookie or a vet from another team, and get him ready to play in a reasonable amount of time, something is wrong with your approach.
This is similar to the Golden State Warriors. They have complicated offensive and defensive schemes. After winning the title last season, due to salary cap issues, they let veteran players leave in free agency and expected recent draftees to fill the void. It has failed miserably as they hover around a .500 record.