I'll stand on the side of those saying confidently, "No thanks. We don't want this in FFXIV."

It may work well for other games, but it won't work well in FFXIV for many reasons. One is, SE need the funds from the subscriptions at the game's launch to float happily and be able to pay costs. After such a terrible start with v1, I don't know how anyone can not realise the significant importance of this fact. They lost a lot of money and need to recoup costs, get subscription numbers up and drum up interest for new players. You might argue they'd get the funds eventually, but until all the transactions are sorted out ... the money technically doesn't exist. "Free" subscription fees certainly don't help here either.

After seeing the debacle with Atomos gil-hoarding and selling what is effectively a win on certain fights (Garuda, Rivenroad - Hard), I have no desire to see these people earn even more gil and certainly not real-life money. Was a guy in a social ls I was part of. Bragged about having over 90m gil from Atomos event alone, his attitude became very ignorant and egotistic against those who had less money. He would throw gil at materia, getting people to do things in-game for him, paying for NM kills; basically making himself better geared than others. I have absolutely no desire to see this type of behaviour become even more common. You've all seen how an over-saturation of gil raises prices in general, because sellers start to get greedy and the rich are too rich to care.

It also costs money to design and introduce a system like this, and right now, SE most likely have neither the resources or the desire to introduce it. Let's not try and overcomplicate things. Some of us won't be convinced however much others think it works in other games, and we'll just have to agree to disagree.