I would say red needs the classic resist system
badly.
Next add item loot: this would go a huge way to evening the playing field. You want to take your cof/fungi monk to unrest? Be prepared to have all the noobs within 3 zones trying to take you out. Top guild shows up with 30 dragon haste geared players? Better hope they don't lose anyone
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Finally it needs TEAMS. It would allow all PBAOE spells to work, prevent the OOR healing/buffing bs I've experienced a few times and when appropriately coded it would prevent people from just hopping on the winning team, with rules like 'if the average online population of >L30 team A chars is more than 15% higher than team B, you can't create a new character on team A' and 'if you play a team A char, your IP is locked from playing a team B char for a week'.