FC recruiter: Oh, hey newbie, great to have you.
New FC member: Good to be here. You know I've started getting into crafting. If there's anything I can contribute to, let me know.
FC recruiter: Well, we've got a workshop project going on. We're building an airship to send out on voyages. We'll need the supplies on this list to do it, though.
New FC member: Cool. That sounds so exciting. All those ARM quests talking about how the guild started off in shipbuilding, and now I actually get to do that as well. I've made some of those ingots it needs. How do I add them to this project? It'll be so cool seeing it come together.
FC recruiter: Oh, sorry for the confusion. You don't add them to the ship yourself. But if you give them to our workshop lead, he'll be able to make a ship with them.
New FC member: What? So you mean he's the only one who actually gets to build anything for the FC?
FC recruiter: Yes. But hey, when he does so, he'll need a few other people to just stand around in the workshop with him. If you could do that when it's time for it, that'd be great.
New FC member: Oh...Well, ok I guess... If that's what the FC needs.


versus how that conversation might go if we DIDN'T have this 4 person rule:


FC recruiter: Oh, hey newbie, great to have you.
New FC member: Good to be here. You know I've started getting into crafting. If there's anything I can contribute to, let me know.
FC recruiter: Well, we've got a workshop project going on. We're building an airship to send out on voyages. We'll need the supplies on this list to do it, though.
New FC member: Cool. That sounds so exciting. All those ARM quests talking about how the guild started off in shipbuilding, and now I actually get to do that as well. I've made some of those ingots it needs. How do I add them to this project? It'll be so cool seeing it come together.
FC recruiter: You do that over here at this fabrication station. See, there's the current project and items it needs. You just select which you're contributing and add them.
New FC member: Like this?
Fabrication Station: < whoosh >
FC recruiter: Yep. And see there how we're a step closer to completing it? Once all the current phase's items are in, it'll advance, and you'll be able to add the items for the next phase if you have some of those as well. With all the FC's crafters doing a bit of it, we'll have this thing airborne in no time.
New FC member: Great. I'll make some of those plates on the next phase's list, so I can add them as well when we reach that point.


I know which version sounds more inclusive to me, and a better pattern for getting crafters to work together on a communal project. Unfortunately, it's not the version we have now.