So this is what the Devs should have done:
Allow for tiered walls.
Tier 1 (The original type of stone wall that we can currently use)
Tier 2 (The new version of stone wall with organic paste that we see here)
Tier 3 (4x the amount of resources)
Either the graphic of the stone is changed when you upgrade for a visual ability or you can either go up to the wall or use the scope to check the tier of the wall/building structure.
This way it benefits new players by still allowing them to build walls and established players by allowing them to upgrade walls through the means of trade and transportation of goods.