The biggest difference is that they recommend having a single step process instead of the current two-step process of first looking up the registrar and then using that registrar's WHOIS system.
What two-step process are you talking about? There is only one step for me to get information from current whois database:
$ whois slashdot.org
that is all, no second step is necessary.
You don't see it because the *nix whois app does the both steps for you.
It requires two queries. The first query is to find the registrar that is associated with the name, the second query is to get the data from that registrar.
The ICANN proposal sounds very bad for me for several reasons:
- current system is fine, no reason to change it
- centralisation is bad. What if the U.S. controled central authority started to filter entries it doesn't like from the database? What if the central authority refuses to accept certain new entries into the database?
- users would need to register and pay fee to access (certain info in) whois database
The current system actually has several problems.
If you have your own domain name, you know how every year you get about 50 emails and postal mailings telling you it is time to renew; they send something that looks like a bill for services but is actually an overpriced DNS transfer agreement. That is one of the problems the proposal is designed to reduce. Sadly it cannot be eliminated, but that abuse of the system will be harder and more expensive to scammers.
The current system is also not fine in that it has too limited of information when you actually do need to contact an organization. Most people don't see it, but when a NOC needs to contact a major domain owner, and needs to do it *NOW*, there is no immediately useful record in the whois data. So the NOC will usually just blackhole the domain until they can eventually reach someone's phone or through email.
For your other concerns, what if they do? Think about each.
Let's assume someone filters the entries from the centralized database. Nothing in the proposal says "kill the existing WHOIS". In fact they should probably keep them running for many years to come because the existing tools will not all change overnight. If a registrar (or a nation) feels threatened, they can keep the service up indefinately (or in the case of governments, order the registrar to keep it running).
Next, lets assume the central authority refuses to accept new entries. What does that mean? The DNS entries would still exist because it is a service contract between the individual and the registrar. If the centralized source rejects them then they're really going to piss people off. NOT collecting information is the opposite of what would happen.
What if they required fees? The proposal actually does recommend fees for certain data, so I suggest you go actually read the proposal. Think about it carefully. If they require fees for information needed by lay people and most small businesses then the backlash would be tremendous. Overnight you would see several competitors. Also because the existing WHOIS services do not need to be removed they such an action by a central source would cause them to fail. But they do recommend charging fees for some things like bulk searches frequently done by scammers and domain squatters. They also recommend charging fees some of the new cross-TLD functionality, which again would otherwise be more abused by scammers and squatters.
I recommend you go read the actual proposal. Don't read it with an eye for OMGWTF SPIES!. Read it with from the perspective of a NOC operations engineer.