Whoa, Chi really got pretty. She looks good with longer hair and no bags under her eyes.
Yes, it was nice to see a visual transformation of her radiating her growing confidence and success.
I do think it might have been good, though, for her to change in her clothes rather than face/hair. Less so that it's bothersome she becomes less butch when she gets happy (although fair criticism if that's something that snags for you,) moreso because it'd parallel what Nagi said to her, "I think cute dresses would suit you too, Chi-chan."