I was also wondering if the namespaces would work as normal account names. I agree the 5000 XEM is too high. I’m pretty sure most users setting up an account expect to do it for free and just get charged when actually transacting.
Probably the amount is so high because Namespaces are not meant only for that - the analogy using WWW would be that anyone creating a Wallet, would also receive a domain name like “greg.be”, haha that’d be awesome of course, but…
Further on, yes namespaces can be transacted to. You can send money to @evias (please try that haha) that will send the money to the owner of the namespace.
What I’m thinking is such name features can be easily implemented, fingers (not all) in the nose probably. Have your own namespace for 5000 XEM paid, then publish a nanowallet that lets people register by username and register all those crazy usernames under your root namespace (that makes it 200 XEM per Wallet only, for example) - because subnamespaces cost 200 XEM.