@ shia you can not have too many people working on the same stuff. For example Ants, you have several types of ants that work on different parts of the colony. Soldiers protect the queen and the colony, then workers help construct tunnels, then several breed with the queen, then you have the ones that gather food. By you logic you want everyone to either get food then make tunnels. Which can't work like that.

When you play a game there are several departments. When you watch the credits. Same for movies etc. MMO are ongoing projects. You have battle devs who maintain everything battle related. Then teams who design content such as dungeons. Then you have teams who handle economy stuff. Each team can only work on the stuff they are good at since it is different coding and mechanics. The reason stiff was slow at first was due to yoshida taking over and reorganzing everyone to do the stuff their good at as well as adding more people from other games to give them more people to do stuff their good at.