That's the main problem for me actually. Before, we neeed minimum 60 stamina to clear all the daily event missions. Now, it's 360. And that's a lot. It's really hard to do other stuff without using stamina potions.As for the single event stage, I'm not sure. I usually switched to the lower stamina ones once I'm done with the event rewards and now that would be impossible, which is a downside.
And now, with explorations, we can get free 5* easily (at least with at high level). Nice. I guess. Too bad they don't came with R-medals. They game just said "below 6*, it's trash". But that's cool! an easy way to (almost) complete 5* collection. and get enough dupes for cheaper RG.