A good idea, but not sure how it could be implemented.
As has been said, the current titles, and the flowers that appear under the name, are automated by the software. As an Admin I've seen where this is set up and it's all based around number of posts.
There are some other titles which are based on something called 'reputation', but it's not implemented here. They might help, not sure if they way they work will be useful or not, and I can't implement them, that will need agreement from Marty, but I'll take a further look at how they work.
It seems to be related to members who already have high reputation, high post count, have been here a long time, can vote members up... but also down.
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This makes me think where anything along these lines might cause problems. Even if it were only moderators/admins who could give someone the new titles like we are talking about, you could get a situation where someone feels they deserve a title, but the moderators and/or other members disagree. This could lead to bad feeling.
If someone gets a down vote, or even doesn't get the up vote they would like it could make them upset.
I wonder if this is why Marty has never implemented this system, because I know he always wants Orchid Board to be a very friendly non-divisive place