Hi,
I read this message and I really liked it :
Fitness issue :O
Oh then got an idea about building that makes a zone effect for our island, something close to Footie Pitch, that increases the production slightly for most of the smelters (why smelters, well, it missing all kind of zone buffs, no guides, no zone buff, also smelters workers need a really good fitness to work perfectly), and because this need high-quality equipment maybe it is a good idea to make this building uses a good amount of platinum.