We don’t work with Asana we’re just community members. And the answer to that question is you make your desires known by hitting ‘vote’ at the top of the thread, it’s how they gauge the desire for new features at least in the community.
If you have a dedicated Asana rep for your Organization, you can talk to them I guess, but other than that this is where you make your desires known =)
I would possibly see if @James_Carl’s Sendana can help? =) I don’t use Outlook at all, but it’s built for it: