I was thinking something with a better chem/fire/energy resist than that. For instance in polymer armors or gel armors a laser actually has less effect on account that the light hits the melting plastic and has a hard time going through, or like on space craft they use polymer coatings for fire proofing. Things like this included in a light armor the way it does in metal but offering a scientific approach. Not saying it needs an entirely new set of schematics, but maybe a new item that can be used in schematics like, polymer plating or ballistic gel infusions. Kind of like how kevlar cloth increases ballistic and mechanical damage resistance, polymer could be a lightweight version for energy/acid/thermal and maybe even mechanical considering a lot of new modern armor is made with it.
The difference being that in leather armor you can make it lighter and still have some energy/fire/cold resistance, and with metal as well, while the tactical vests are just about completely left out of this circle. While they do offer things like 200% ballistic damage threshold and 100/75% for riot armor, they are terribly heavier if you get any level of good protection from them, and then if you meet a single energy based enemy you just get destroyed. And by no means am I saying this is bad, but for late game as a tactical or riot armor user you have pretty much no chance since there are energy weapons all over the place. Pretty much you get forced into metal or leather if you want a good level of all around protection.
Also considering super steel I doubt a plastic based light armor would be too far fetched as far as damage resistance goes. The only difference is that when using super steel on tactical and riot armors, it has no energy protection value. While with metal you get 40-50%/20-25 Threshold mechanical and around 50-60%/20-35 threshold for energy, while at the same time you also get 40-50%/15-20 heat threshold protection. So you are really forced into metal armor for super steel. And if you use the infused leather you can very easily get some energy/acid/thermal protection from the leather you use. I am just suggesting a cloth or plating variant that could be used for tactical and riot armors that will give some level of protection against these things.