Might also consider an optional feature or maybe an alternate mod that adds a tech chain, equipment upgrades, or both that extends reach range gradually as the game goes on. I'm not one of them, but I'm certain some people would like modular advancement like that.
There is a mod called "Long Reach Research" which does exactly that, though it's not yet updated to 0.16. If it's creator won't update, I might have a look into it, but this would be done in a separate mod.
The mod "Armor Reach" for 0.16 increases reach with upgraded armor.