The exact details have yet to be worked out. The current three major top-level domains have no screening process whatsoever. That screening is extremely work intensive. I agree that screening is work intensive, but the higher the barrier to entry, the fewer applications we expect to get. We don't expect to get 7,000 applications a day like a registrar in dot com.
Registrars compete on their services and the cost of their services.
We would operate on a cost recovery basis and work with competing registrars. The applicants would pay the fee to the registrar, not to us. We would support lower-income country applications through an existing process that we use in publishing called a revolving sales fund. Requiring registrars to do screening is not currently in their remit. We don't foresee it as a problem.