In any case, let's start with the negatives:
- I don't like how the event can just be easily completed just by having seraphina. This gives a p2w aspect to it because if new players cant pull a seraphina, they won't be able to clear it reliably (I pulled 5 times before I even have one seraphina). And the fact that seraphina will be useless when events end doesn't help either.
- The drop rate on heroic is just terrible. I understand dev want to reward people for doing legendary but the drop rate overall is just terrible. I've played for almost a month now with a 32 Hera Cybella and some decent heroes (not newbie just don't have good champion hero). However, I can't kill all the legendary chest, so I have to farm heroic. With the drop rate of 3 to 8 unrefined gem for 7 energy, it's just terrible. To put it into perspective, to exchange for 100 gems, I need to do from 63 to 167 runs (each run costs 7 energy) which is extremely costly. At least the previous event, I can trade for a guarantee fodder every 10 keys but this event is just so not worth it. The alternative is doing legendary and since I can't kill all the chest, I can get 0 unrefined gem for every 10 energy spent. Anyway there's 4 days left and I think I'm done with this event as it simply not rewarding to farm for these items in the bazaar.
- I enjoy the trials challenge as opposed to the previous horde mode since that is just grinding. This you can think through with some sort of strategy. However, the challenge becomes non-existent once I realized Seraphina can just solo the stage herself.
- The bazaar has some good items as opposed to the previous one but I dont think I can get anything since energy to unrefined gem ratio is just too low for me.
In conclusion, legendary mode is good on its own. Heroic drop rate is terrible. Event quest should not include 21/21 trials since the extra gem/extra drop in itself is reward for clearing those harder stage but event quest should be open for everyone to clear.