Discussion - Set Aside Tabs and Warn on Close

There are several scenarios for Set Aside tabs, let say I am doing research on something and I open up multiple tabs , visit websites and I end up with so many open tabs, I am not doing this research forever, so may be I want to keep tabs for few days and once I done with research let them go, in this case, it won't worth to add them to favorite and then delete favorites or browse through History (as I might open up other non-related tabs that day) and set aside is very useful.

I also regularly looking for developer related questions and open up multiple tabs and I am into same scenario, if I keep add everything in Favorite it is very confusing and I am lost and Set tab aside was a fast way to quickly get everything in one place for short time. Set tab aside actually could integrate into favorites too. So let say I open multiple tabs and set them aside then I have another Window with multiple tabs, I want ability so if I set them aside I could select to set them aside as new folder or include into existing folder. And when I right click, I could rename, delete or add to favorite. It would be interesting if look and feel of Favorites was look like Set Tab aside so we could see preview of website and this look should be customizable and see like list of folders or thumbnail of website and of course ability to Sync across devices.

For close tab prompt, it should be simple , in the setting there should be an option asking prompt if I want to close tabs. It normally happens by accident, let say I have multiple programs (including Microsoft Edge) and I try to close one of them and accidently close Microsoft Edge too. In past, it shows notification and prevent from accidental close down but in new Microsoft Edge, accident happens and everything close. Those who don't like this feature could just turn it off but people like myself would see it very helpful.