I always thought a high level goblin tunnels/mines zone that connects Runnyeye and the Highkeep Basement would have been awesome. Would be cool after handing in 100+ ears that Captain Bosec would give you a key to it or something... I posted about it in a thread a LONG time ago. A few fun suggestions in there.
https://www.project1999.com/forums/s...1&postcount=14
Also could have put in smuggler's tunnels to the Ro Deserts... where cutthroats/highpass/goblins/orcs all mingle.
But yeah, a high level goblin dungeon/mine (for mithril) would have been really cool between Runnyeye and Highkeep. I thought it HAD to be there back on live and literally spent a few hours one night searching the Highkeep basement (raider room, etc.) and Runnyeye for it. I mean they are two zones away and all you would need is a SW->NW tunnel zone.
http://wiki.project1999.com/images/M...rs_norrath.jpg
I wanted it to be like Kedge but without water... lots of huge mine shafts and twisty/turny. Honestly a few zones in Kunark did this (Nurga/Droga), but it should have been between Highkeep/Runnyeye.