The construction worker is as the only one who is not upgradeable!?
my idea
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The construction worker is as the only one who is not upgradeable .
okay you have the gems to complete the construction process immediately.
Collection of gems is a patient and long process. If you CoC play without money.
If you can upgrade the construction workers just like the rest of the troopen . So they quickly complete their construction process. ( per level costs ... gems )
So you make the game more accessible for gamers who do not want to spend money on gemstones. And yet, can upgrade their workers .
