Tree Style Tabs, Sidebery, or similar are must-haves. I do try to clean up my tabs regularly, but I almost always have more open that can conveniently be displayed in a horizontal tab bar.

Vertical screen real estate is at a higher premium in general on desktop, anyway. No point in keeping my browser at the full width of my screen when most sites adamantly refuse to use the space anyway (case in point: Lemmy).

Yeah I hopped back over from Edge when the manifest v3 stuff came out, and the two main things I miss are proper profile management and vertical tabs - I've been using https://codeberg.org/ranmaru22/firefox-vertical-tabs to get around it currently, but having a native implementation to both issues will be a massive (and recently rare) Firefox W.

If it's using a local model like it says I think this is fine:

We’re looking at how we can use local, on-device AI models -- i.e., more private -- to enhance your browsing experience further. One feature we’re starting with next quarter is AI-generated alt-text for images inserted into PDFs, which makes it more accessible to visually impaired users and people with learning disabilities.

Did you read more than just the three words naming the feature? Their use case is actually smart, and could potentially help users a lot.

The recent addition of local in-browser website translation is an awesome feature I've missed for many years. The only alternatives I've found previously were either paid or Google Translate plugins. This translation feature is an example of an AI feature they've added.

If it runs locally then no data ever leaves your system, so privacy would be respected. There are tons of good local-only LLMs out there right now.

As far as performance goes, current x86 CPUs are awful, but stuff coming out from ARM and likely from Intel/AMD in the future will be much better at running this stuff.

A well-implemented language model could be a huge QOL improvement. The fact that 90% of AI implementations are half-assed ChatGPT frontends does not reflect the utility of the models themselves; it only reflects the lack of vision and haste to ship of most companies.

Arc Browser has some interesting AI features, but since they're shipping everything to OpenAI for processing, it's a non-starter for me. It also means the developers' interests are not aligned with my own, since they are paying by the token for API access. Mozilla is going to run local LLMs, so everything will remain private, and limited only by my own hardware and my own configuration choices. I'm down with that.

I'd love to see Firefox auto-fetch results from web searches and summarize them for me, bypassing clickbait, filler, etc. You've probably seen AI summary bots here on Lemmy, and I find them very helpful at cutting the crap and giving me exactly what I want, which is information in text form. That's something that's harder and harder to get from web sites nowadays. Never see a recipe writer's life story again!

Don’t be ridiculous…. Now an AI powered bidet that really gets the shit off your butthole…

there are 4 things

Yes, I mean that's one of the points explicitly listed, no?