Topic: less abstract marines

Just spit balling/seeing if anyone has done anything similar.

I like the 1-to-1 basic marine rules, they're simple and clean, and the alternative rules in H&C are a step away from abstract while still remaining simple.

Has anyone used marines with an attack or defense value for more customization though?  In short, rules for capturing remain as in H&C but Marines are given attack values (to-hit opposing forces: 2+ - 6+) and defense values (to-save vs opposing forces' hits: 2+ - none).

Granted it adds extra paperwork and dice rolling but it'll allow you to simulate power armor marines, heavy weapon marines and so forth.

If anyone's done something like this what SU/DRAT/ORAT forumulas did you use?