I would like to see all the life-and-death stuff came though the same channel instead of the current patchwork of apps and feeds. Wildfires, flash floods, tornado alerts, evacuation notices, etc. all come through different apps. I'd also like to see mandatory WEA service from all mobile providers.

Also, a text only message with the important details and a link to a website for more information seems to be the best solution. In a disaster, mobile bandwidth tends to be overloaded by everybody scrambling for information.