So, I'm glad that Microsoft is focusing on a real-world pain point for people on Edge. I don't think people can be talked into switching browsers by stuff like the Cortana integration, but this might convince some. One problem is that Edge really isn't quite ready for primetime yet. There's a few sharp edges here and there that make using it about 90% pleasant enough and 10% really painful. Some of it is that I don't think the UWP is as fully-baked as the old Win32 ecosystem yet, and it makes weird compromises. The multitasking model of UWP seems to be phone-first, which is just out of place for me. When I have a desktop PC that's plugged in and has 16gb of RAM, my web browser should never just spontaneously CLOSE because I tab out to another window. I get why Edge does this, believe me. (I just got out of a two-week stretch of using a cheap Nokia Lumia as my smartphone because of problems with my main device overheating, and there's such a tension between being impressed at what Windows 10 for Phones or whatever the hell they're calling it now can do in 512mb of RAM and thinking that 512mb of RAM is incredibly frustrating to live with.) But it doesn't make sense on the majority of devices that Edge runs on. Leave my browser window open. I'm going to come back to it. Also, Microsoft really needs to break the link between Edge updates and Windows updates. This doesn't affect me much at home because I'm Fast Ring so I get Windows updates more often than I eat meals sometimes, but in general I don't think it's great for the ecosystem.
Also, if by any chance someone working on Edge is reading this thread, can you make it so I can resize the text box for adding comments to Hacker News? Chrome lets me do this, and I would probably increase my Edge usage significantly with just that fix.