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!
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> Katie!!!!
>
> Yeah, she was the one I felt best about, just wish she had marksman instead of sure shot. I'm 500 tokens away from pink star, I've been thinking about spending 4000 crates for 50 whenever I see them
Do not worry about that. You can add her damage with badges.
The rest I would save for now until something better comes along.