"casuals" get to do Delve all the time. You do realize you can use beads, that are 100% drop rate, to lock out 3 NMs? That means in 45 minutes you have to kill two NMs and one Mega boss, HOW can you possibly lose!? I see "casuals" shouting for Delve all the time, there is nothing stopping you from shouting on BST and gathering the appropriate jobs if your BST is well geared. All the NMs in Delve are also soloable on BST, outside where you can get non-mega boss items to prepare for them inside. I already explained how these BCNMs have items that are good and some are comparable to Delve gear if you don't have that. They are also all soloable on various difficulty levels.