How are you defining "very active"?  I know traffic is way down as of late, but that number somehow seems low.  I would bet that the number of active old-time members, or those with a reputation that makes them "known" is less than 1000, but I can't imagine that figure includes members like bounty hunters, for example.  They're extremely active on the forum, though 99.99% of them are unknown, unknowable, and probably have more alts than members of their family.

As I said in the WO thread where you first posted this, I'm not against titles for certain members like you proposed.  I'm just not sure Theymos would be willing to get behind an idea like this.  When was the last time he did something like this?  For that art contest a while back? 

I would also suggest that only a small handful of members deserve a special title, and they should be very well known, probably very active (with the exception of Satoshi perhaps), and have been a member of the forum for at least one or two years.  You may end up giving a title to someone who stops posting, and so I think it's important that a nominated member have a proven track record of being dedicated to the forum--and that takes time.  Members like Vod, TECSHARE, Quickseller, OgNasty, and some others have been here a long time and would be some names I'd be thinking about.