I'm glad to see the new resources system! The old crafting mechanic was interesting, but a bit frustrating, especially with the slightly clunky UI. I'm looking forward to seeing the future of the energy system. I think it regenerates too fast, allowing me to continuously gather and duel without ever putting down the phone (bad for irl productivity! ;D), but I can't help but appreciate the speed at which I can gather resources now. I also like the new portal opening animations. They're much prettier and clearer on what rewards are given.
Two small issues I've observed persisting after the update:
I've noticed that I still can't see the victory animation unless either player brought the other to 0 HP before the final clash of the champions - after the clash, the winner is stuck in place instead of floating to the center of the screen with fanfare. I'm not sure if it could be an issue or my end or others experience this too. Also, if I uncover a fightling pair that has turn-ending effect (e.g. any opponent from Innocence) and manage to swipe a minion up before the effect of the fightling takes place, the minion is stuck in the center of the screen, usable as though it were still on my hand.
The first issue is on our list but the second one is new. We'll look into it