with a full warehouse of 400k iron you can queue 1600 LC units, if you send over resources and start those at the same time you can fill offensive villages ridiculously fast, if people play with 50/50 villages and have 4 offensive ones being fed resources and built like this it will be way beyond what a player who is not paying can defend against, even should they have more villages.
This is not just buying 112 LC units for 50 gold, this is having the ability to double your production rate in all your villages for the price of $
adding this will seriously skewer the balance between non-paying and paying players
