Difficulty increase for tier 4+ delves

[Zitaska-aerie-peak]

@Linxy

Difficulty levels of tiers 9, 10, and 11 have been lowered.

• Developers’ notes: In season 1, tiers above 8 were meant purely for players who wanted a challenge. Now that we have more desirable rewards such as Gilded Crests on tier 11 we wanted to review the difficulty levels of these tiers along with our philosophy behind them. We had previously balanced them with the thought that tier 11 would be a challenge for all players in the game, even up to the high mythic levels. In season 2 we are changing our philosophy for tier 11 to be the highest challenge for delve players, which means it is balanced around what fully upgraded gear players can get within the delve ecosystem as opposed to the entire game.

Too early to say at this point.