The moderators already have work on the hands and to add the verification of new projects before their are introduced into the community will be an extra job for them and may not have the time to do the moderating job the are scheduled to handle.
So, if I understood you right, you mean the due diligence term that is ususally referred to the projects conducting IEO on some exchange.
Bounty due diligence? Sounds great!
I think the bounty managers should have that responsibility of searching out a project either it is legit or fake before bringing it to the forum.
It's likely bounty hunters who are to search out if the project is legit or not, and conduct their own research. Bounty managers are just managers, no more.