As I said, the forum part is EASY.
For those donors who wish to be known as donors, I can easily create a user group that says that is what they are.
All I need from them is their forum user name, and I move 'em into the group. That way, anyone who looks at 'em here will SEE that under their names, rather than member or junior member. And, as part of registration requirements for the forum is giving a valid archive user link, all anyone has to do is click that link to see the user's profile.
Something for far in the future (and I do mean far, like a year at best) that we can likely do is linking between the profiles in the different programs, once we get the new software working in the manner it needs to be. But in the meantime, at least for the forum, it's definitely very very easy to do.
Thank you for your donation Harley!