I keep laughing when I see people assuming that every facet of the game will get a drastic improvement when PS3 is finally dropped, notably that graphics will go back to 1.0 quality.

Yoshi himself has stated that 1.0 graphics were just too over the top and has no intention of ever going back to them, he prefers performance over visual quality, and rightly so.

All we're likely to see improve when PS3 support is dropped, are more UI options, larger scale encounters, and maybe some more character options, such as saving glamours to client side.

Most MMOs on the market don't do a complete overhaul on graphics, unless their game is severely out dated, of which, FFXIV is not.