It really was noticeable to how me much more present Kara seemed in the first two parts of "Elseworlds" than the part that was ostensibly her show. "Present" is maybe not the right word, but IDK. Barry and Oliver felt like the protagonists in all three episodes, but especially the ones for their respective shows. Kara felt like a protagonist in Part I, but by the time we got to Part III, she felt like a supporting player. I feel like it's consistent with how her show often treats her though.
Totally! Barry & Oliver drove the story the entire time, which is completely fine for their episodes, but I really disliked how they incorporated the Supergirl characters into the last episode. I wish they had swapped Kara with someone, or let her dress up like Barry & Oliver got to in the Supergirl episode. And it did Kara a huge disservice for them to have Deegan become evil Superman. It made it so Clark was basically the star of the episode. And I love Clark and actually think they did a great job writing him, but they can’t keep having Clark say how Kara’s so much stronger than him, but then in the same episode she can’t rewrite reality with the book, so he ends up saving them. I get that it’s special to have Superman, but give him his own show then and let Supergirl shine on her own.