Not sure if anyone's suggested it, but if you get the torrent chest and hold a steady balance of acc pieces, acc melds shouldn't be needed. The current stat weights on both prioritize crit and skill speed. The only piece you'll ever meld det onto are the pieces that have capped crit and semi capped skill speed. While I'm not using a few of the pentamelded pieces now, this ariyala page shows some pieces I pentamelded for savage. It should illustrate the general mindset pretty well:

http://ffxiv.ariyala.com/TSLF