There are two systems that the Devs have told us are being planned for 'Mechs to use to increase the accuracy of their SRMS and LRMS - the Artemis IV FCS and NARC missile beacon. Both have advantages and drawbacks, and should be compared to each other and alongside the TAG system.
The Artemis IV fire system has the following advantages:
- Completely stored within the 'Mech - no relying on teammates who may or may not be equipped with the system.
- Increases the amount of missiles that hit the target if any missiles at all hit in the first place.
- Always active - no need to activate.
- Can be used in conjuction with TAG.
- Incompatible with NARC beacons.
- Provides no indirect fire bonuses.
- ECM nullifies the effect.
- Artemis IV - equipped missiles cost more than their standard counterparts.
- Offers no benefit to friendly 'Mechs.
- Separate Artemis IV installations required for each launcher type.
- Improves both accuracy of one's own 'Mech and any friendly 'Mechs with NARC ammunition.
- Increases missile hits to the same degree as Artemis IV
- Fire and forget - hit a target with a beacon and everyone gets the effect for the rest of the combat.
- Allows for indirect fire from NARC-loaded friendlies.
- Require ammo that can blow up.
- Must hit the enemy with a NARC pod before any benefits are seen.
- ECM nullifies the effect.
- Short range - user needs to get close to attach the pod.
- NARC-capable missiles cost more than their standard counterparts.
- Incompatible with Artemis IV.
- Friendly units must also be using NARC missiles to gain benefits.
- No special ammunition needed.
- Longer range than NARC.
- Provides indirect fire capabilities to friendly 'Mechs.
- Not affected by ECM.
- No benefits to the 'Mech that actually carries the gear.
- No accuracy bonuses, just the indirect fire capability.
- Higher maintenance - only works while the target is being 'painted'.
- Requires accuracy in initial painting to give benefits.
Obviously each is going to have some times where they are more useful, TAG is light enough that it can be added on with one the other systems. The question I have as a probable pilot for a scout and/or indirect fire platform is: when should Artemis be used or loaded and when should NARC be equipped or loaded?
For an established lance or company, I can definitely see NARC being the way to go since it can be suggested that the company/lance scouts carry NARC to give more accuracy to everyone at the cost of less overall tonnage devoted to the systems - the system itself would only be in the scouts, everyone else would only have to worry about loading up with NARC-capable missiles.
For people who don't have a regular lance they work with, I would be more hesitant to recommend stocking NARC unless it becomes fairly standard across the board, since its usefulness drops in a unit that mixes Artemis IV and NARC. Lone scouts may wish to consider dropping NARC to free space if it does not become standard, and lone LRM-loaded 'Mechs may wish to seek out Artemis to not have to rely on whatever group they find themselves with.
TAG is fun for everyone, though!