I have been farming Slifmoor for majority of time, just lvl 29 DK. As far Andermant goes the drop rate avg. over night is really fine. I do strongly suggest dev's to work on farming in dungeons better as by killing the Champions/Boss monsters etc. Dungeons tend to drop more. The main reason why I've stuck with Slifmoor is because the amount of mobs there is insane compared what I've tried. (Burning Coast - My level is bit low to leave it for bot to handle, Troll Zone - Too low amount of mobs in map, I have been trying to do Loxley lately to upgrade my gear).
This is what I suggest before as well, the paths to frontier really do need noaction, combat. My issues with Loxley is that there is specfic caster boss monster in path to there and bot always gets stuck with that mob unless it's been killed or someone is attacking it, so I normally die to very weak boss mob, because bot doesn't have very well designed boss monster combat. It would be just fine if you were walking to your grind zone without engaging in combat.
Just my two cents, I have been really busy to level manually my DK. The levelling seems slow to me and bot can't handle stand-alone farming in zones that grant me decent XP, so I have been just stocking up resources. The bot uptime is fantastic though, I have been running this bot "non-stop" over 12h row. This department of bot is really great.
As I mentioned before, if bot could buy essences every visit to town as well it would make it so much more efficient.
I'm currently going to see how does your combat system improvements work out, the old one was quite clumsy as far the use X skill when, even if prioritised correctly.
IE. Use X if Y is Boss mob.
And Use change target to X if Y is Boss mob.
AoE could by previous version look better too like, before it used Smash and random AoE ability once in cycle and then used rage generators and was sitting on 100% rage a lot.
Use X "AE" if more then 2 mobs stopaction Y (Angry/Rage), use G "AE".
It just feels like there's no stopaction to priority list abilities so it would storm through mob packs better and faster. And not end up sitting 100% rage.