and two of them are almost restrictively heavy, especially the latter (standard C3 and Boosted C3).
Weight cannot be really tweaked. This requires adjusting units.
This said, given the benefits of C3, one to four units paying 5 tons for the network is not terribly steep price, provided the command units are otherwise smart.
I see C3 vulnerability to jamming to be far bigger issue given the cost.
One option to possibly make C3 worth its price would be to make it immune to Guardian ECM (but not Angel), and make Boosted C3 immune to Angel ECM.
This way, you'd pay quite a lot for C3 but you also could make good use of it without a single ECM breaking everything. Might be too expensive still though.
And this would reduce worth of ECM a bit though, would mere BAP and Artemis (and Streak for Angel) immunity be worth it? Especially given that under standard rules BAP is basically death weight already. But this is not perhaps a big loss, as currently ECM makes C3 near worthless... Slight buff to BAP's usefulness (eg making the to-hit bonus through obstruction standard) could balance things neatly.
Adjusting cost is slightly more difficult.
PV-like system is hard to use with BV, since value of C3 depends heavily on a unit's equipment. Large bank of small lasers with C3 is not nearly as good as several large lasers with C3, so static/slightly scaling price is not really viable. Simpler in AS since weapons have unified ranges.
Baking C3 into BV calculations for an unit is possible but work-intensive. Say, C3 cost takes account the 'Mech's medium and long range attack totals, possibly modified by heat, etc. Naturally this leads to this cost being there always, discouraging use of C3-equipped units in games that don't involve C3. This is less of a problem in Alpha Strike which features (optional) systems that make use of C3 units even without C3 network, and because AS unit variants tend to be more similar to each other so finding a replacement is possibly easier.
Simply lowering the cost percentage is possible, say 2.5% or 2%. Finding a good value would require extensive testing though, and comparison of near perfection execution to poor use. I figure the current price is high because perfect use C3 should be pretty damn strong, but naturally this assumes ECM is not an issue for whatever reason. But would lowered price be enough to make C3 viable as long as ECM is as powerful against C3 as it is now?
EDIT I'm inclined to think that my jamming-immunity solution might be the easiest and best solution.
If it is too powerful, we can nerf C3 a bit in other ways: We'll bring back the LOS-requirement between the attacker, spotter and target. Or however the system was before errata was issued with BMM. Or implement some other restriction.
