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I do not understand why the human economy is slower than other races. Especially considering that they get the lumber upgrade and their miners are as fast as other races.
Since comparing to other:
Ghoul food/gold cost = 2/ 120
Peasant = 1 / 75
Wisp = 1 / 60
Peon = 1 / 75
Ghoul attack and hit = 2 lumber Peasant / Peon = only 1 wisp = 5 for time that worth 10 using other peons but not kill the tree and instant pay to bill so it get faster to the player account instead of walking.
Ghoul can upgrade its attack speed and move speed peasant = can't peons can near to tauren cheiften aura for move speed wisp dont need to move.
Advantage:
+ can maximum carry more than peon when upgraded (wisp not need to walk or carry and ghoul do duble gathering with 20 max and move faster when upgraded)
+ can built drop spot from time to time closer than the one before and can do it fast built mode, unlike undead which has huge drop spot and cannot be replaced with fast building mode, orcs can do new drop spot easy but can't do it fast built mode and wisp dont walk

.
Disadventage :
- Can carry less comparring to ghoul.
- Need to move back comparring to Wisp who don't need to.
- Can't move faster using magics , like bloodlust or tauren chieften aura comparing to Peon.
- Whenever peon create new lumber drop spot , the new tower can upgrade faster the whole army attack/defense/ tower spikes. Humans need to spend 120 gold and it give no real army upgrades.
Conclude:
comaring to other races, in order to fit their speed human need to constantly spend 120 gold on new lumber mill which is a big waist, they need to walk, they carry half of ghoul carry and do half on hit, and they can't become faster using human auras.
Final desicion:
1- Get goblin to do that job.
2- Make a lot lot lot of peasant and wish no one kill them from behind.
3- if hopes not helping built milion towers.
4- don't use human when you want best aconomy race.
Gold:
Advantage:
+- = Comparing to orc they are the same not really advantage but equallity
Disadvantage:
- Need to walk, which make them vulnerable to attack, unlike wisp who is fully protected or acco which don't need to spend much distance of walking and easier to defend for that reason (try to holy light peasant and u missclick).
When attacked:
-+ = Comparying to ghouls, ghouls die the same as melitia equallity not advantage.
- Comparing to Wisp can't deny enemies exp gaining when attacked by blademaster, can't kill summoned, can't drain mana, can't remove buffs.
- comparing to orc after it run into its "defense mode" it only become more targeted and raise its potential to die with melitia.
- comparring to accolites they are much harder to click about without miss click before they die, since they are milions and accos are 5.
Concludes:
Blizzard need new patch in order to make this balanced aconomy among the races.