Do these buildings benefit fighters or negotiators or both?
Goods do not benefit a fighter
But with the exorbitant costs that do not scale not really a negotiator either. it's just too expensive.
I mean 26M coins for a single negotiation, how should that compare?
Even if you slash it trough half it's still too expensive.
110K orcs even if you slash that trough half it's still to expensive.
This is why for good scores fighting is the only option.
That does not mean I would not support a wonder that slashes costs in half.
It would still be interesting enough for me at least, but like timwarp it would come way too late in game it would like in chapter 20 or so.
But it can be brought closer.
Same as military, just use diminishing returns
If a Silver Tongue building(TM) reduces negotiation costs by 5% down to 95% then the next one placed reduces 95% by 5% to 90.25% etc.
This way even placing 20 buildings only reduces costs by 65%
30 buildings to 21%
40 buildings to 12.8%
etc
That would work but hard to explain,
Military does not work that way.
3 DA add +150% HP not 50+25+12.5= 87.5%
Maybe your mistaken with back in the day a change they made:
First you could be immune to attacks by having 75% DR and 30% debuff = 105% immunity
Then they multiplied it so you could never have 100% DR 0.25*0.7 = 0.175 = 82.5% DR
Now they use innomath so that a 30% debuff on lets say a pro ranger means he losses 57% of his mage defence.
It would be really hard to explain to people that everything in the game seems to stack except negotiation debuffs,
I can imagine the thousands of complaint not just on forum but also at support where they would have to deal with.
To much headache.
You are saying that UUU and DA are somehow targeted at melee? I agree that they will boost melee, but only because they apply additional health to all troops.
Yes and no,
HP boost is the only effective boost for melee units,
Attack boost have little to no effect for melee units, so even if these buildings existed the would be near useless.
It;s somewhat the other way around for ranged units
Attack bonus makes them shine, the more they have the more they shine.
HP booster do have much more effect then attack booster would have for melee units, but HP in beneficial not what makes them really strong.
the issue is that there is no other "good" melee booster possible. it would be a melee only HP booster or maybe 2-3 extra move range
and 4 extra initiative. to make them viable.