If not already considered, could you give the 5/6 Encounter token fronts a significantly different color for a better sorting ability
The official plan at the moment is to use the complete set of original tokens for 2-4 Hunter games and the new set for 5-6 Hunter games, so there is no need for sorting and separating.
However, we fully expect people to mix them together for all kinds of reasons and they will be marked or numbered in some way so you can separate them. This the current plan for all cards in the game and expansions too.
Could you please post an example picture of an encounter token of the 5/6 player expansion?
Because there are frequent changes to these tokens for balancing, all our play testing is done with hand written tokens. We will not have official tokens for some time.