They could make one for every level bracket.
Too bad the game AFAIK doesn't have the ability to remove badges or have timers on badges so that if you don't save so many citizens per week the badge is removed.
They could give it interesting rewards like a +regen or recovery bonus for maintaining the badge that starts high in the lower levels and goes down as you level and maintain the badge, but is still something people who eek out every little bonus at 50 would want.
Maybe after scaling resists kick in, but before that you can be 1 shot by some things, though you can get your base up enough to survive it. I think I have a build where I did that with most if not all resists.
People seem to forget that most of the players have little to no DDR and can easily go from soft cap to floor mat in seconds.
That is where the def and resist shield shine. The game makes sure your protections have at least one hole.
Sure SR doesn't have to worry about most attacks, until they are flattened by an auto hit block of cheese the size of a Buick. I bet they wish for some resist shields then.
Actually no. This was the early 90s when the internet as we know it today did not exist. It was just some BBS sites and where one meg was a hefty download. Still though, there are situations where someone can go a long time without being able to log in.