I feel leery about them implementing any kind of automated countermeasures for bots when the only one currently in existence to my knowledge (The whole "fish sense something amiss" thing) only serves to inconvenience players as all of the fishing bots have a multitude of alternate fishing spots they'll cycle through whenever it kicks in.

The only automated measure I've seen actually have some measure of success are security softwares that link to a MMO's client and will either prevent from you connecting at all or immediately close the game if it senses some kind of outside program interacting with it, but they're really just an additional hurdle for the bot makers to work around in the end and it can potentially alienate people who use more harmless things like parsers.