If SE adds a gil-sink, then future items will get cheaper anyway, and it won't be necessary to sit on gil to prepare for buying things that will be added later. If SE doesn't add a gil-sink, then inflation will make each individual gil worth less, and spending them now isn't much different from saving them and watching them devalue.
Either way, the whole "save every penny for things that don't exist yet" plan really doesn't hold much water. If you're sitting on a mountain of gil, you might as well spend some of it if you see expensive things you want. The whole reason Templar gear costs so much is because SO MANY players have more gil than they know what to do with.
I think you contradicted yourself a bit there.. That or, you assume all these players will (in a timely manner) amass all the gil they'll ever want, however the future goes.
Of the two possibilities you went over, the chances are overwhelming that SE does
add a significant gil sink. I think most people would agree there. And you say when that happens, things will get cheaper (due to gil inceasing in value). Yet you advise to buy overpriced things now?
I wouldn't quite say to save every penny for things that don't exist yet - but that kind of mindset definitely does hold water under this likely scenario. These sets all have four pieces to them - if I had to buy all four, I'd rather spend 20 mil in 6 months than 40 mil now.
Edit - I bet in 6 months, many of the people buying this stuff now won't even want it.. Because there will be something new and shiny - clearly whether the stats are worth it doesn't matter, lol. Edited, Feb 12th 2011 9:00am by Coyohma