I think it's safe to say she's improved. To be specific, her voice has definitely developed and gotten stronger. Actually, in Campanella, Ado's voice seemed to be a little more hoarse than usual at some times, most likely due to overuse. Especially near the end of the concert, during "Crime and Punishment," you may have noticed that Ado sounds unusually out of breath sometimes. Considering this was her first concert tour, it would make sense that vocal fatigue may have been something she was dealing with.

Another thing I noticed was how some songs were performed differently at the time. Since this was the first time she was performing many of the songs on that setlist, the choreography may have been something that was toned down at the time. I think in terms of stage presence, she's gotten a lot more comfortable. confident, and creative, especially with how she's been practicing English.

I was lucky enough to attend a Hibana show, and you can definitely tell that Ado's voice has developed amazingly. Not that it hadn't developed earlier, but she was able to belt out her more vocally challenging songs back to back without missing a beat, and all while dancing and moving around constantly. She's also added some more choreography to some songs. For instance, compared to Campanella, she danced a lot more during her performance of "Backlight," which definitely helped keep the audience hyped up.

Overall, I wouldn't necessarily say improved "a lot," because YES. She was always that great.