Hi @Kenneth_Obel,
Portfolios has recently been released and addresses many of these requests including the “custom fields at a project level” in the title of this thread, as shown in How to Get Started With Asana Portfolios | Product Guide • Asana Product Guide. But I’m afraid Portfolios is only available as part of a new tier called Business which is at least twice the cost of Premium, though you can request from Sales or Support a temporary free trial of it.
Larry Berger
Asana2Go & Asana Certified Pro consultant at Trilogi