I was fairly surprised at my first attempt at super Saliery with my usual double castoria / zerkashi team, so I switched with the immortal team
I rolled Himiko for new year GSSR and didn't really use her outside of those challenge quests so I do find interest in balancing the use of skills needed to maintain the team afloat, easy 30 teapots!
Then, like @Zoroastaru said, I would liked something more 'immediately valuable' than the teapots (tickets, sq etc..), and maybe different mechanics than 'here is the same boss fight enhanced with a bazillion HP have fun', but I did have fun nonetheless haha