Thanks. We’re trying. Really.
It' quite clear at this point. Thank you!
I’m waiting for consensus on this. Some say str-5 is great, some (like you) say str-5 is too much. I have already commented that this should NOT be compared with str-6 torps, this should be compared to two T-Hawks, which are the equivalent to four regular launch bays, because that’s what you are actually giving up to get this. When you look at it like that, someone would be daft to give up two T-Hawks for a str-3 prow-only B-cannon, which in the all but the best of circumstances will only give you +1D6 to hit. Str-5 B-cannon will in most situations give you two more shooting dice instead of one, which is a much more equitable trade for two T-Hawks. Thoughts?
You're totally right comparing the BC trade to the t-hawk loss is the primary design consideration, but I believe it's important to analyze how this trade force multiples when applied to more then one SC that will most likely get squadroned. Up until this point I admittedly was going with gut feeling, but now that we are deep into conversation, I just put theory to paper to see what the results of making the prow BC upgrade strength 3, 4 or 5 (in addition to the existing F/L/R 3 BC of course). Without transcribing the chart of dice I just scratched on paper this is the summary:
Extra Dice and effects of SquadroningUpgrade Str3 BC: +2 dice Closing, marginally better dice (+1 in abeam/Moving away). The dice scale the most accurately between 1,2,or 3 SCs in a squad. Meaning that it's pretty much 2 or 3 times as many dice.
Upgrade Str4 BC: good average improvement of dice across all aspects ~+2 dice, but no improvement to abeam from the str3 upgrade. The interesting part about squadroning this configuration is that closing dice scale accurately. But, moving away is actually slightly unfavorable in trade for abeam being more favorable, meaning that squadroning yields slightly more then 2 or 3 times as many dice when firing at targets abeam
Upgrade Str5 BC: As Nate said, it pretty much guarantees +2 dice to even abeam, the overall average improvement is +3 dice. Here is where it gets riddled with opportunity cost! Squadroning ships actually has the least favorable scaling for prow bombardment fire with nearly all aspects in 2 and 3 squadron configurations getting less then 2 or 3 times as many dice respectively.
Thunderhawk verse Bombardment DiceLets compare the 2 Thunder hawks against a SINGLE Bombardment die roll in a generic situation:
2 Thunderhawks: must escape an average of 2 turrets(4+) giving them a 75% chance of doing at least a single critical (25% chance of doing 2) which each in return has a 1/6 chance of doing a point of damage meaning there is a 1/8 chance of doing at least a single point of damage with one of the criticals netting you 1damage+critical.
Very high odds of a minor critical with very small odds of doing actual damage.
1 Bombardment Cannon Die Roll: roll must hit(+4) giving it a 50% chance of doing 1 point of damage, then it might critical(4+) meaning that a die roll from a bombardment cannon has a 25% chance of doing at least 1 damage + a critical.
Fair odds of doing damage and the odds of doing damage and a critical are equal to 2 thunderhawks chance of doing 2 criticals and TWICE as high as 2 Thunderhawks doing 1 damage+a criticalAdditionally, the critical from a BC is not restricted to the first 6 entries meaning it has a chance of actually doing another point of damage or something much more game changing to the enemy vessel!
So, in my eyes getting to roll an extra BC die is actually much better then a Thunderhawk since they are already being added to an existing dice pool. Under an average situation 1 BC roll is potentially better then 2 thunderhawks, based on all of this I conclude that...
The Bombardment replacement for 2 T-hawks should be a Strength 3 BC. The average dice improvement is really about 1.5, but this is slightly improved with squadroning making it more like 2 extra dice (but not guaranteed). Because I believe a single BC die is much better then a single T-hawk I feel this is a good trade. Still, I would be scared to be on the receiving end of a prow BC shot from 3 squadroned SCs!
My original anaylsis made me believe that BC4 was okay, but double checking has caused me to conclude that Str3 is probably a fair trade and Str4 is quite possibly better then 2 Thunderhawks from 30cm offensive position. I could probably live with Str4 as a compromise...Look at that Nate, I almost agreed with you after taking a look!

Russ