A really good idea for a Monzo business account would be prepaid business cards like Revolut. Like Revolut the card would be linked to the business current account and you’d be able to track spending and set spending limits. Also having a black Monzo card would be cool.
EDIT: Prepaid isn’t the best term to give it but lol. These cards would be given to employees and from the main account, a manager would control it. The employees Monoz account would look similar to the current app. On the mangers end, they’d potentially have a separate app where they can manage their team’s money. I think having all the admin control in the current Monzo app would make it to complicated and bloated.