A certain gigantic war games company often makes models designed as squad leaders who carry a close combat weapon (CCW) while the rest of his squad carry long rifles. I want to design a standard (i.e., not ad hoc) infantry unit that captures this effect.

I considered designing a CCW as a weapon frame that, when taken, increases the figure's HtH dice by one, and perhaps adds an effector to all his HtH dice. It would take up a weapon frame slot and cost whatever one  of his HtH die would cost, plus the cost of any additional effectors for his total HtH dice. I would calculate this for each individual infantry frame allowed the CCW weapon choice and list it as a standard sidearm choice.

That seems like a lot of work, and I don't know if it would break the system. At the very least it's strange because, while ranged weapon frames are calculated separately, HtH is included in the infantry frame itself. Here I am trying to shoehorn an infantry frame modifier into a weapon frame; however, as I understand the rules, I can't just modify the leader's frame itself without forcing the unit to be ad hoc.

I looked at simply renaming the Bionic Arm individual augmentation, but I want an option that would, for example, allow Sergeant Mad-Dog's energy-crackling power sword to be field piercing, while allowing his crew of loyal veterans to carry standard issue laser rifles.

Could I design an individual augmentation that would allow HtH effectors, and be represented on the model as CCW equipment? If so, how could I keep it balanced? What other options haven't I considered?

As a new DVG player, I look forward to learning from your experience.