So i am at 150 delve today, and it is a tiresome borefest. Combined bonuses of level and rooms makes the enemies unbearably tanky. The introduction of spell damage reduction traits(i blame @Jainus for that) doesn’t help the situation either as doesn’t apparently every troop being skull resistant.
So my suggestion is to drastically increase the offensive stat bonuses from Hoard level. Defensive stats are nice and all but the tiny increase of attack and magic will litterally not even be felt as it is so drastically outpaced by defensive stat gains of enemies(and their reduction traits). Offensive stat numbers must go up significantly to make the leveling of the Hoard somewhat meaningfull for the progress.