If they ever do drop support for PS3, it doesn't mean PS3 players won't suddenly be able to play. It means they wouldn't be taken into account for further content upgrades or support. FFXI showed this much. I think it's kind of sad how you're so willing to have a whole demographic of players screwed over (I play on PC and PS3, so I'm not particularly biased), just so you can do things that are more suited to a sandbox MMO than the themepark style we have now. Most of the areas they have blocked off by invisible walls are blocked because:

A. They go into pits or deep water. (PS, the "flying expansion" you mention hasn't said anything about there being flying in it other than FC owned airships. If you're hoping for flying mounts you're going to be disappointed.)

B. Are blocked off for lore reasons, likely because content will be added there in the future. The Duskwight ruins you mentioned come to mind.

Unrelated, your character looks like a creep with his little pedostache.