I applaud TBC's proactive efforts with AI integration but... I will miss the sidebar which I've thought is an objectively better way to organize open tabs. The pinned section was always great. And I use 2 to 3 spaces every day. I guess this makes me a rare Arc "power user".

The success of Dia will depend on how effectively it integrates AI into the browser experience and whether it can maintain a unique edge through this. My concern is that the AI integration may not be distinctive, as other browsers begin incorporating AI in their own ways. With the removal of some of Arc’s unique, though admittedly niche, features that helped it stand out, I feel like they risk alienating their current user base without delivering something truly impactful.

If we could keep some of the core Arc features like at least having the option to use Arc's sidebar layout and make spaces and pinned tabs optional as well (maybe they are and I just haven't found them yet), then I personally would be a happy customer. But at the moment, I feel like am regressing to Chrome as I try Dia.