Board Thread:Hosting Game/@comment-32942597-20171015224939/@comment-33380184-20171017022424

Maybe instead of just simply upping the cost for upgrades, how about change it into

commerce_profits*(1-I( tech_level_difference )*0.2I)

This might encourage people who want to help out their allies.

BUT, if you want something more in-depth:

Import cost/I(tech_level_difference)*0.2I

After all, how would importing something from an undeveloped country be more costy than an advanced one?