My only recommendation to the devs is that any changes be implemented in
baby steps. Large swings in game play mechanics would likely result in large swings in population (both good or bad). Adding yellow text and removing pvp xp loss are perfect examples of small scale changes; lets see what happens and then reevaluate other possible changes.
P.S. Wiping of the server would be bad imo. I for one would not re-roll on the new server for fear of just having my characters wiped again.