Or alternatively they could make other things just as viable to farm Esoterics. Give Alexander 20-30 Eso, Void Ark 40-70, High Level Roulette 30, Trial Roulette 20, Bismarck & Ravana EX 15-20, Leveling Roulette 30-40 (these dungeons usually drag on forever), etc. I don't see why they don't do this already, would giving players some variety really kill you SE?