IF this were going to be a yearly thing (IF) - then, I would be fine keeping a list (even if it is not public) so as to exclude those characters from future drawings for a period of 1 year. Winners have to skip the following years drawing (just the chars, not the multis).
As far as an entry in the Hall of Fame? Why?
There are conscious actions a player can take to manipulate Charm, Gold, Gems, Alignment, PKs & DKs.
Clover winners and Pumpkin winners have to survive (and it takes a lot of effort to do this as well).
Lottery winners put in a lot of effort by - having their name picked at random?