Map Bonuses
I haven’t seen anything official but from some unofficial information and in game observation it looks like you get 100 point of progress per event and you get an item every 200 points. The guild enhancement gives up to 10% extra progress. It could be decent for things without much alternatives like quartz crystals or unidentified dyes. For other items more research is required.
So, it’d take 10 events in order for the bonus to do anything at all, assuming you’ve got a guild hall that’s high enough for a +10% bonus. In addition, there are several bum awards in each list…eh, might be better to go Silverwastes after all. Slightly slower for the more expensive lodestones, but with the added bonus of giving a whole bunch of other stuff, including Coarse Sand.