The Selene one was okay, except it should be pronounced "Seh-lee-nee," not "Seh-leen." (Although until I checked just now, I always thought it was "Sell-eh-nee.") Pretty good stuff with Dewey and Webby's search for his mother, and they almost managed to make Donald interesting, though I still needed subtitles to understand most of his lines.
Tonight's new episode was excellent, and very nostalgic. It opened with a Darkwing Duck segment with Jim Cummings reprising his role (along with Michael Bell as Quackerjack, though the other villains were recast), although I guessed correctly that it'd turn out to be a TV show within the show, an old one that Launchpad liked as a kid (and they glossed over the fact that Launchpad was a character in the show, missing a chance for some meta surrealism). Mostly, this was partly about Launchpad trying to prove himself against a robot driver and partly about introducing Fenton Crackshell-Cabrera (Lin-Manuel Miranda) and debuting him as Gizmoduck. And this is practically the first time in the revival series that Launchpad has really felt like Launchpad to me. Usually he's written as so incredibly dumb that it's amazing he can dress himself, which gets tiresome after a while. Here, he was less of a caricature and had more texture, more inner life and coherent purpose, and a sense of aspiring heroism that was good to see again. And I love it that he saved the day by crashing.
As for Fenton/Gizmoduck, they kind of rushed his introduction. I would've liked it if they'd done what the original show did and let us get to know him for a couple of episodes before introducing the supersuit. But he still managed to make a pretty strong impression and the debut worked pretty well. It's an interesting choice to make him an aspiring inventor in his own right rather than an accountant, although that weakens his connection to Scrooge, as does having Scrooge not be in on his secret identity. But then, Scrooge has turned out to be a somewhat secondary character in this version.
Also, in keeping with modern superhero TV conventions, the hero's identity is known to more people right off the bat. In the original, only Scrooge and Fenton's mother knew he was Gizmoduck. Now, Launchpad, Dewey, and Gyro are in on it.