Hello, there are big differences between the original "v.1.0" rules and the revised rules. E.g. the wainwright...
This is not a change, but just a clarification.
There is just one question. If more than one player goes for the wainwright/mosques "strategy" how to know which player collect which gem from where?
This is very simple: You pick up the gem at the wainwright immediately at the time when you buy your 3rd upgrade. And at the mosque immediately at the time when you buy your 2nd tile of the same mosque.