Sorry but further buffing LS damage against trash is a terrible idea. This is just powercreeping the game without addressing any issue.
Goth have LS that cost -30%, Japanese attack 30% faster, that’s much better than +4 vs trash. Yet we are still not seeing longswordsmen with these civilizations. That’s showing the problem is unrelated to their efficiency vs trash.
IMO the problem is they are too hard to train for a situational purpose. Let me explain.
LS are already very good against:
- all trash units
- buildings
- eagles
But these things are all marginal in castle age, and not something you actively need to be ready to take down. So LS are good in a niche that is very situational.
Now the issue is, because of the absurd number of techs needed just to train them (Man at arms, Longswordsmen, Supplies), you have to plan before you want to go LS, which makes no sense: no one will plan beforehand that they will make a unit that is extremely situational.
That’s the true reason we never see them. Even if you’re playing against an opponent that makes only skirms and pikemen, you won’t go LS, because you won’t research 3 techs to counter something that your opponent can just stop making when he sees your longswordsmen and just react with knights that require 0 tech.
So, instead of making LS stronger in an unexisting niche, we need to start by making them practical to produce. The tech buff is a good idea imo, but I would even go as far as suggesting:
Techs:
- Man-at-arm, Longswordsman, Supplies, researched for free in Castle age.
More controversial, I would also suggest the following stat tweaks:
Longswordsman:
- HP +5, +1 melee armor.
- Bonus damage against Eagles and buildings removed.
Nerf to bonus damage is because this bonus damage serves no purpose, it just hinders their overall buff potential while making them unnecessarily strong against eagles and TCs. The stats changes will compensate for this by making them slightly better against knights and archers (against which they still fare terribly).
With free techs, they have a new niche of “thing you can train quickly from a barrack”. They also get a new niche of early castle rush unit that can be massed quicker than archers. Just like we see sometimes non-cavalry civs make 1 or 2 knights when they hit castle.