Users wish to have a donor status down to their profile, but what they need to spend makes them leave of its own. We can't say it is not worth it and nothing to gain, because among the entire list of users in the forum if you go through the list of donors it is very small in count. Being one among them will probably get you priority in forum related activities. We might be not aware about those.
Yes that would be far better idea. The list is too long and outdated. Having 'Donor' next to the avatar is good.
Two 10,000 bitcoin Pizzas says it all. Donor status should be awarded to all donating 0.001 bitcoin