Im Grinding a lot, Questing is too hard with the amount of people competing for mobs. I have looked at my bots thrashing between tagged mobs in quest area's and have opted that grinding in a quiet spot may be slower- however my ban rate should be lower.
Because im grinding, each 2-3 level's I actually play the bot to do a quest / dungeon to mix things up. No bans yet.
Re-spawn rates is a blessing or a curse depending on the class. My Hybrid bots (Shams / pals / priest / druids) who run mana conservative, heal prioritized FC's have been able to pull through chain mobs fairly well. With passable gear they have been pulling very nice EXP / hour.
Meanwhile locks / hunters have been managing in most cases, however sometimes after the 5th mob in a row they can come undone.
Mages, rogues and warriors i have found to be borderline un-viable for the time being. Too many times i have seen my rogue / warrior bots get stuck at the same spawn point with the same 1-2 mobs continually respawning on top of them till they die.
For the next few weeks im lvling shams / paladins/ priests to get some cash + gear together. When things settle down il look into other classes.