Are these survivors worth upgrading?
So up until recently, I wouldn't have called myself a very strategic player, I've just used brute force without paying too much attention to survivor traits. And as a result of extremely poor luck in radio calls (just now, 4 hero fest calls and best was 1 epic... lame!) I've had one main survivor per class. But now that I'm trying to get further in the distance (and failing at) I'm wondering if I need different ones. I don't think they're bad, but I've been hording class tokens for a bit now instead of auto-upgrading and was just curious is people thought these were worthy of further investment or I should hold out hope for something better. Thanks!