Well, after a bit of thinking I chosed :
-hunter are fine, it has been demonstrated that warriors are the issue, not hunters.
-rising the cost of warriors is dangerous in the early game, even for the AI (as barbs gets units for free)and you're doomed if Orthus comes nearby : it would induce that more AI civs get destroyed by him.
-no bronze is also dangerous, especially versus lizardmen or skeletons.(saying you don't have the problem only reveals an AI issue, lone barb attacking you instead of grouping before attack)
-make axemen cost less ? it would move the issue to the axes vs champ.
-obsolet unit ? and how do you build your first defender ? + always nice to have cheap defender to calm your population.
I have 4 proposition : (those are a bit late, coming after the poll but.... worth a try.) :
1)
reduce bronze weapons effects.
-make bronze weapons gives +20%str instead of +1str.
for axes and champs or promoted units it would still be better to have iron than bronze. (especially with the bonus against bronze weapons...)
-bronze weapons would still help the warriors but give them a +20% that adds to promotions instead of a flat +33% that is multiplied by promotion.
(issues : change in the way metal weapons works.... ; for phalanx, bronze might be better than iron)=> bad one
2)
nerf the warriors power in attack :
-make them 2

units able to get bronze weapons :
same cost as scout so same power ! (replace the 50% vs animal and 2mvt by a 25% city defense + bronze weapons ability. )
I know that skellies would be overkill in that case : BUT A SKELETON army should rout warriors anytime !==> they are thier II units !
For balance issues maybe give them a compensation :
-homeland type caracteristic : +30% in civ borders (make them 2.6 before bronze and 3.9 with bronze, but only inside the civilization borders. (issue : barbs warriors would become non-entities)
-or +25%vs melee (should help to face skellies)
-or give them back iron ... (the same issue discussed before would appear : iron warrior (4

, 25

) vs iron axes (6

, 60

)... but only really late game, bronze axes being (5

) way better than bronze warriors (3

)
3)
"bronze working" ups the cost of warriors
make it so bronze working, while giving you bronze weapons makes that warriors costs now 35

instead of 25

.
bonus : early defense with warriors is still doable but when you transform them into killing machine with bronze, they have a more balanced cost.
how to justify it ? :
"to make warriors, now, you have to build weapons for them instead of just picking a stick in the woods so it is more expensive".
how to do it : "bronze tech" obsolets "warriors (25

)" and replace them by "warriors II(35

)"
issues : have to make 21 more unit_NAMES just for a balance issue.
or just : "bronze tech" adds "-30% building rate of warriors".
issue : is it feasable ?
global issues : it would induce micromanagement, people delaying "bronze working" 1-2 turns to have more cheap warriors.
4)
change the warrior strength distribution :
-either make them 2/3 or 3/2 ....
strange proposition I know but it would make them worse than axes either in attack or in defense.
It would still help you defend against barbs : either by attacking or by defending.
Both options can have logical explanations.
(I'd rather have 3/2...)
I know those are bad compromise, but as said before I was not really convinced by most propositions about warriors.