I get the idea of speeding progression up in preparation for an increase in iLvl, thus why we have a massive boost to Myth in 2.3 to regular dungeons and raids. I feel that the developers did not forsee that people would grind these mobs and so 5 sands in one week was not anticipated. This has lead to the over realiance on hunts over every other form of play. So maybe we need a solution that speeds things up but makes all forms viable? From the lock outs on CT2 and Coil 2 it seems that once a week for a sand/oil could have been what they were thinking. Reducing the amount of seals gained per hunt or increasing the cost wouldnt negate the constant trains for hunts as they still are the most viable solution to get them. I think a cap on seals so that only one sand/oil a week could be gained would be my thinking (and that is my own opinion not saying its the right way to go) and a reduction in myth so that the time taken is similar to that of dungeons.