That is nice that modders can do that, but we need to make sure that vanilla is going to work on many years worth of PCs, Mac, Linux, consoles and lot of different GPUs. Currently, the game barely fits in Xbox Series S memory and quickly runs out as you try to play it, so memory is a great concern and we are doing a lot of work to reduce usage of. Streaming/unloading will help, but that is not a Unity strength, so some programming time is going to trying to improve that, without lag spikes loading data.