Lasers are highly accurate but short ranged. They lose power as they hit dust and debris in the atmosphere. It would make the most sense to give lasers pinpoint accuracy at the cost of range. They have unlimited ammo, at the expense of heat. Lasers are very well balanced in this regard. The more powerful the laser, the longer the range and the higher the heat.
Ballistic weapons should have a slight accuracy modifier, because realistically even a hard mounted gyro-stabilised weapon firing 20 shells in fast succession will not hit in exactly the same spot. This however should be dependant on range and rate of fire. A slow rate of fire is more accurate, as is a shorter range. This is not a universal modifier, it would be specific to the gun's traits. This way ballistic weapons are balanced between long range/low heat and lower accuracy/limited ammunition.
PPCs and Gauss weapons are essentially extremes of these two camps. A PPC would be very rare and expensive, hard to maintain and would pump out a lot of heat, in return for high accuracy, damage and range. Similarly, Guass weapons would be (less) rare, have low ammunition, have a slow ROF, be expensive to buy, replace and maintain in return for dealing high damage at long range with next to no heat.
With this approach to weapon balance, the 'COF question' ceases to be relevant and creates a more dynamic, interesting game.
Edited by Aeolian, 14 November 2011 - 11:24 PM.