Modding

It will result in a rather nonsensical mod. 1. It will be difficult to tie the castle upgrade to the hero's level. 2. If you have only 1 wood and ore mine, you will have to save up for the golem upgrade for 25 days (3 weeks!). In HotA, you receive resources for leveling up. It would be much more interesting to create a mod that removes the Elder Council upgrades (as it was in Heroes 1 and 2).