The title says it all. Story / misc plot content is of course important, but I'm still pretty baffled regarding how this should be done in GHAR, especially with Lua available.
I want to start off small: recreate the infamous sewer cleaning plot. I'm not having too much trouble understanding Metascenes and putting entrances on the world map. I am having trouble conceiving how previously Plot content fits in and, importantly, how to teleport the PC into the first level of the randomized sewer from within Lua (I'm guessing this is another case of 'not implemented yet'; I could try doing it if I understood how the gears system and Pascal approach this)
Maybe that should be re-thought: how about several (or just one) predefined static-positioned sewer entrances into, say Snake Lake or Hogye, which provide access to the randomized sewers that should be cleared out (optionally each being a different difficulty or theme) but which could be accessed even if the heroic sewer cleaning plot isn't loaded. Ostensibly then, the upper few levels of the sewer caverns, the ones which the city actually uses, would have very few monsters most of the time, and then sometimes the monsters from the lower levels will start infesting them, prompting the mayor to ask for help. Also, perhaps static content such as the GH1 Snake Lake sewer with the student doing research down there could be integrated into a specific sewer entrance, while the rest of the sewer is still randomized like in the GH1 sewer cleaning quest.