It would be a great idea if the resources from ancient island, platinum and gems, could be used in the main island. For example, rubies get common orbs, diamonds get heroic. Platinum could be used to buy food or even gems. Considering to buy 400 platinum costs 40 gems, why not a reverse of 400 platinum gets you 4 gems, ie 100 platinum for 1 gem.
It would be nice to use the island for something.