If you visit the Turner Classic Movies Database, you can look up titles they hold and vote to see them on DVD. I have no idea if it will make any difference to the powers that be (probably not, the cynic in me says), but why not go and vote for the unreleased Welles titles in Region 1? Go here to vote for The Magnificent Ambersons (only 31 votes so far); go here to vote for Journey Into Fear (I was vote number 3); go here to vote for Falstaff (only 2 votes); Filming Othello is there as well, but it seems fairly pointless to vote for that, for obvious reasons. This link is to Welles’ overview page, where you can vote for stuff he starred in, or documentaries, and so on. Scroll a ways down to find Fountain of Youth (vote number 1 right here, baby) and vote for that while you’re at it. You do have to enter an email to prevent ballot box stuffing, FYI.