Domain of Istan has always had an issue with AFK Farmers in the Modri Caverns. Killing Ibogas with Minion Necros, Mallyx Revs and Turret Engis. While Turret Engis require player interaction (or macro) every 5 minutes to reset timers. Necros and Revs and simply set 1 skill to auto cast (Gs4 for necro, Mallyx elite for Rev) and stay AFK indefinitely.
With the most recent story replay of Istan given out to all accounts for free. There has been a huge influx of Alt accounts and bots to the Modri Caves to AFK Farm Ibogas and Spiders. By AFKing in this area. I've seen players with as many as 7 Alt accounts (all similar acc name) spread around the caverns and across different maps. If untouched, this 1 player alone is harvesting upwards of 14,000 volatile magic every hour from all their accounts. Equal to 56 Trophy Shipments/hr. An enormous profit. If running all day, that's 1,048g. 7.3k/week
These players can get upwards of 2k volatile magic, several thousand karma, along with Venom Sacs, Unidentified Gear and Crystalline Dust. Other rarer drops can also be obtained. The main issue here being the Volatile Magic, as large quantities of this generated by the AFKers are used to purchase Trophy Shipments. Resulting in massive profits from T6 and T5 materials.
I have discovered ways to combat some of these AFKers. Giving AFK Revenants Might will cause their self torment to deal more damage than their passive heal can handle. Thus killing them over time. Perma Stealthing Core Necros/Scourges who aren't auto casting a skill will cause them to be kicked from the server for being AFK after 30-45 minutes.
Necros that are auto-casting skills such as GS4 can be countered by killing NPCs instantly as they spawn, with classes such as Deadeye. However this only negates their rewards for as long as you stay. This is because necro minions only attack after being attacked, thus killing the NPCs instantly will result in not kill tagging from the AFK necro. Sadly on the engineer front. There is nothing that can be done. Generally engineers are just semi-afk, which is ok. Only a minority of them appear to be using macros (noticeable if an iboga pulls them, and they continue to setup turrets).
Before posting this, I checked 6 maps and found a total of 63 players who are AFK (Auto Cast or Minion Necros/Revenants). Using the same estimated rewards as above, these AFK players are bringing in 504 Trophy Caches/hr combined. Equal to roughly 400g/hr while fully AFK for hours on end. 9.6k gold per day (24hr). This is not including the engineers.
Solutions to this problem, which I can think of are;
1: Making both skill activation AND movement required to avoid the map DC timer. Requiring players to do both to avoid being kicked after 30-45 minutes
2: Making skill auto-casting only work while in combat, such as Auto-attacks already.
3: Giving minions a 5 or 10 minute despawn timer. Similar to engineers and their turrets.