All you other lvl80's out there farming for cash, go to halls of eternal frost instead, much faster.
If you're farming for items or just to grief (like I do) keep at it my friends.
Make them lowbies suffer for being slow!
Don't know what is so bad about it, i only farm Main system at like 3am, twilight hours, i am only person in there and tonight i made 5g in 2 hours, and i got a new chest and nice boots, and when i am 70, i will still come back here and farm the bosses in the 60+ of the dungeon, even more potential loot/silver. From 2 nights i have farmed gold for horse, 4 buildings to the guilds buildings in city and made a futher 4g. Only bad thing is as you say, people doing it in prime time of playing and ****ing everybody else over, very rude. Also if any other higher levels who need cash,loot, try farm catacombs, also very easy and 3 bosses drop nice loot/cash ^^
to the OP.
Level 60-65 players are ok since Main System connects to Catacombs which is higher level. You can find 60-62 elites further in, in main system.
But I agree that its very annoying to find a level 80 farming the bosses in there. If you are in a group of level 50-60 players those level 80's are pretty easy to kill tho.
You are wrong here, that Catacombs is connected to Main System, they are on other side of Noble district maps, the area past Cave graveyard is for quest "Ruined Rites of Passage", a follow up from quest in Catacombs. Catacombs is full of Nemedian's, Spiders and Blackring, not Undead.