PROM holders should participate in the marketing budget allocation. For instance, they can choose what potentially unprofitable strategies Prom should not use.
To illustrate the idea, let’s assume that Prom has launched a giveaway. Then, DAO members who find it useless should create a proposal where they explain that the event is an unprofitable waste of money. This, after the voting, Prom may have to cancel the giveaway.