While I do not agree with many of your proposed solutions, I fully agree that PS2 support needs to be phased out. Current PS2 users should be given several months notice and given free PC versions of all the content they currently own. Any computer made in the last 6 or more years can play FFXI, and if you do not own a computer or cannot afford a $150 computer to play it on you shouldn't be playing FFXI anyway.

If they dropped PS2 support, upgraded the interface and graphics to HD resolutions, released a new expansion, and made a more convenient account/billing system FFXI could make a huge comeback. Of course this won't happen because they stupidly decided to make a product that competes with another product they own and splits the user base.