Four questions:
1) How is a soldier's Strength determined?
1.5) how do you find out what a soldier's Strength score is?

2) Is there any way to boost their strength? Equipment, buffs, training, anything like that.

3) Is it possible that certain custom classes can inadvertently generate with an implausibly low Strength score?
[rant]Or is it entirely intended mechanics that led to me nearly getting a TPK because the Doom Slayer spent half the fight cuddling her (yes, my Doom Slayer is a girl) snek waifu halfway across the map? I had to rush one of my two remaining troopers past nearly a full squad of Armored Vipers to bail her out because she had (according to the game) a 5% chance of winning the strength check on her own, which went down to -20% if the viper decided to apply weakness that turn.[/rant]

4) Is there any way to affect the conditions of a bind or affect the binding viper from inside the bind besides Break Bind or having someone else attack the viper? Any equipment or abilities that could damage or debuff the viper while it's holding you, either passively or as an activated ability?