When rates will be changed there will be no any changes with bots amount. will be changed just few things - prices for adena will be lower, prices for materials will be highter.
About reporting of violators - keeping game clear from bots and RMT is a Support's team job, so why players should spare theyr time for recording videos and opening tickets? Maximum what can request from regular players it push report button on "potential" bot.
I already offered my vision of how to make boting for RMT profit useless - legalise player2player adena deals by making NCcoins items with posibility trade them in game. So players who wanna buy adena will buy NCcoins and sell them to regular players, regular players who playing by free2play model will be able safely get NCcoins for using them for keep theyr VIP status and buy L2 store items. This model might make a hard strike to illegal market of adena trading, protect usual players from scam risk at NCcoins4adena deals. Farmers who running bots for making real money from adena sales will leave cuz will be much harder sell "dirty adena".