Bad Omen increase Boss Difficulty

Like Trial Chambers how using Bad Omen can start a “hard mode” difficulty I think it would be cool if when you summon a Wither or Ender Dragon, if you have the Bad Omen applied it will boost the bosses difficulty, maybe more health and damage they apply, new mechanics and even some constant mobs that support like Shulkers and Wither Skeletons will appear similar to Zombie Reinforcements