As it is now I have to play arcades separately from my friends to increase the chance of finding the recipes we are searching for. Not very fun.
We should encourage cooperation by making Basil offer either a partially or completely different list to each party member that reaches the terminals.
While we are at it remove some recipes from the HoH (lets say remove all alchemers but the prismatech from Daxen - and so on) and likewise remove all recipes that would be left in the HoH from Basil.
In combination with the above we could increase the number of full parties travelling the arcade and prevent newcomers hitting the HoH grindwall that hard - that is if they want to craft gear that is not available in the HoH.