The need of central utilities
There are several central utilities which are still needed.
The goal is to have one identity across all agent domains. The goal is also to have various levels of verification being possible (and secure).
Which regions are connected together. In a way, the DNS of the metaverse. Duties now largely performed by the 'space server' (?)
Here different payment methods should be implementable.
(I would simply make APIs for the domains and let other people handle search).