If your engineers are not involved on the business side, they basically have no clue about who the customer is, how the user use the software, what problems the

If your engineers are not involved on the business side, they basically have no clue about who the customer is, how the user use the software, what problems they bump into etc. In the bigger companies I worked, engineers never even seen a customer or user. A vision needs to flow top-down, but if you want your engineers to make helpful suggestions, they need to be involved on the business and customer side from day 1.