I agree with you. I choose a lot of crit+agility in my scout run and it was too easy to pass the floor (I passed Illfang being just lvl 3, and i wasn't even farming xp, it was just from the side quests), it's even more op than 'full atk dmg' berserk or 'mountain life' blood mage.
Maybe bosses should receive less damage from crits? Plus status resistances are the dream, not immunity. There are bosses that are way too powerful in some floors and i remember only passing then because of a 'one turn paralysis' lucky shot ( i remember the majority of bosses one-shotting Hana with aoe dmg).