
If possible, splitting crits with one/both adjacent components - in the same way an XL/LFE does - makes heavy weapons like the LBX-20 or H-Gauss usable in mechs' arms or with XL/LFE whilst maintaining sensible fragility of the weapon system.
Alternatively, a hacky but perhaps favorably simple solution is to create a new dynamic slot item like Endo/Ferro that assures the weapon consumes the correct number of crits while fitting conveniently into arms or cramped shoulders. The weapon's HP is then tweaked to compensate for it's new crit profile.