I only use regular Gemini and the main feature I care about is absolutely terrible: summarizing YouTube videos. I'll ask for a breakdown or analysis of the video, and it'll give me a very high level overview. If I ask for timestamps or key points, it begins to hallucinate and make stuff up. It's incredibly disappointing that such a huge company with effectively unlimited access to both money and intellectual resources can't seem to implement a video analysis feature that doesn't suck. Part of me wonders if they're legitimately this incompetent or if they're deliberately not implementing good analysis features because it could eat into their views and advertisement opportunities.
I've had it fail when a video does not have subtitles - I'm guessing that's what it uses. I have had good success having it answer the clickbait video titles like "is this the new best thing?"