I had an idea that a lot of other Players have had a positive reaction to.
Survival/Endurance Mode
A series of increasingly difficult encounters with no break or healing (such as Events potions) between matches. Possibly even provide a choice of Altars every X amount of kills that have some detrimental effect to them, such as Status Effects, Armor/Resistance/Health loss, etc.
We could either have a Daily Survival/Endurance that has a particular color mastery requirement similar to Restricted Tournaments, and have prizes that specialize in such color (Ex: Dark prizes include Runes, Scrolls, random Epic Dark Mastery Item)
Or, perhaps the Event could give a certain amount of points depending on how well a Player did, and the points could be used to buy specific resources, with a limited amount of resources from points available per week.
This could also be used to remedy the current issue of having ‘too much Gold’, if replays were based on large amounts of gold.
This idea could generate interest from longer term players who have become bored of the standard PVP/Events/Daily dungeon grind, and if done correctly, could help newer players obtain some of the resources they need to head into Epic Territory