Well, I'll miss my cleric bot for sure. Being allowed a single bot was one of the draws to this server for myself and likely a lot of others. Brainlessly being able to stay healed while grinding was nice and they regen'd mana like CRAZY. I do understand the changes though and in light of the problems - it just makes sense. I was one who exploited the bots in some of the ways stated, I confess I didn't know it was an exploit although it does make sense.
In some ways too, however, you are going to need to expect the server load to increase as people will likely run a second account now for healing, but with the expected upgrades, this shouldn't be a problem except until then. People played melee characters mostly because it was much easier to do that with a heal bot than to play a healer with a tank bot.
Overall, this change will hopefully be positive and people will stay, but for right now I need to go figure out how to be a better cleric! See ya!