Though I can tell you with some certainty that the major mistakes are 

1. Character restrictions which don't apply to a select few, causing power inbalance
2. Completely free-form RP, essentially the equivalent of throwing toddlers with arm bands into the pacific ocean and expecting them to build a house.
3. Too large a playing field, makes character interactions too difficult.
4. Too broad, too many factions, not enough people to fill it, it's basically Oblivion at this point.

My advice in future, for what it's worth.

Amazing setting, use it to plan something smaller, a specific event perhaps or even some sort of turf-confrontation in a single city, don't throw two entire worlds together and expect natural character interaction.

Don't use OP characters as your PC.

Just my two cents, disregard at will, it's only based off watching about a hundred RP's just like this one die.