This is getting very close to my suggestion of letting Markerlight add both a bonus and extra range to the appropriate weapon systems. IMHO this represents an extension of the Markerlight and indirect fire principles that brings out the way the Tau technology works. Some details would need clarification eg.
   - Units with ML need range and LOS to the target formation and cannot operate if broken.
   - ML weapons do not need to sustain to fire, and ML bonus is in addition to sustain bonus
   - GM need not have LoF to a markerlit target, but do need LoF to other targets
   - Other weapons need LoF to shoot, even if the target is Markerlit (after all they are 'unguided')
   - ML bonus and range would need to be deducted from the basic stats of the relevant weapons.
However, while this expresses one way of developing the mechanism, there are others who prefer to simplify the mechanics absorbing the details into the weapon stats and assuming that ML is always switched on (Dobbsy's suggestion).
=======================================================
Ok, to move the whole debate on slightly, rather than repeating everything again, could we try a straw poll on the principles that we want to see operating here? If CS is Ok, I think there should be three options
- Simplify ML and GM process as outlined by Dobbsy, bringing everything back into the weapon stats etc.
- Keep ML and GM working as currently, revising the unit stats as need be
- Extend ML to other weapon systems as outlined above, reducing the Weapon stats accordingly.
Note1) This is a vote on the principles not the details of how ML and weapons should work in E:A
2) Stats and costs for Drones and Turrets should be considered following the poll, which should simplify the debate.
3) If possible, consider reviewing Support Craft and Planetfall rules later too (though this is harder)
but if it is what I think you mean, like I said the wording could be adjusted. How does this sound:
)