I appreciate the time taken to post (aren’t you supposed to be in Korea right now? ) - the trouble everyone is really having with it, is that in order for the majority of games to be moddable, they need content importers and / or some degree of level editing tools. People categorically do not want their players to have to pay a license fee in order to mod their games. The game we’re working on is going to be sold at around $10 - a $20 modding fee is a hefty thing indeed; especially if they have to pay it every time we release an update and they’ll need to be a registered Unreal 4 user in order to re-access the modified source. We intend to be updating the core game iteratively over an extended period of time (two years or more) - is it really reasonable to expect players to potentially spend $480+ to mod a $10 game?
We’re looking at potentially writing our own tools now to get around it - including content importers and scripting language. It’s a nightmare
You can’t modify Unity based games without writing your own content import pipeline either. In fact there is no solution for out of the box for anything out there. If you don’t want users to have to purchase Unity or Unreal then rolling your own modding is your only alternative.