It is highly recommended to follow 1 and only 1 strategy in order to improve in the best way your speciality points.
Use 47 points on "full right blue" to get higher loyalty possible.
Use 12 points on "up left green" to get +18% gathering on Farms & Quarries
(You can also open a 3rd slot of production if you have 10 more specialty points on the left blue)
Only tile Farms & Quarries to gather food in order to upgrade your Coalitions and reach 8000 loyalty.
Upgrade your Frontline Workshops to level 10 without reset or bonus (you can buy few packs to reach 10 or gather construction materials easily)
When you managed to reach 16s and 8000 loyalty, you need to switch all your Farms & Quarries to Lugging Sites & Mines to gather only construction materials.
A reset is necessary to switch "up left green" to "up right green" and get +18% gathering on Lugging Sites & Mines
Gather enough materials to upgrade your FW first.
When you have enough materials to massively upgrade your FW (check below), reset again.
This reset must be done on green down left speciality to unlock the " Civil Engineering " and the " Honor Award " skills. You will also benefit from -% costs on each upgrade.
Before upgrading your FW, activate the first skill and the honor eden bonus.
After upgrading your FW, activate the second skill to gain a large amount of honor.
To upgrade from level 10 to level 15 you need 7.6M materials.
To upgrade from level 15 to 20 you need 18.8M
materials.
To upgrade from level 10 to level 20 you need 26.7M materials.
This can also be done only with 2 FW according to your production needs.
When you managed to max all your FW to level 20, your target must be either Assault or Guardian Fortress. They cost much more materials and give same amount of Honor than FW, but there is no little win.