Just play a test game on it
Put indies to 0 and conquer provinces if you like. That magic sites are revealed, so you automatically get them when you conquer the prov, without the need to site search.
there are also some provs marked as 'many sites' - all garrisons leading to plains, all cave entrances and I think that also that cave provs behind 2 water provs
There are also some changed poptypes. 4 outer plain cities have hoburgs. 6 gateways [cave provs leading to central island] have recruitable Troll Kings.
Everyone should take a look at the map and test it
You know all settings. We will be probably starting on Monday/Tuesday.