Would be nice if you could expand on early game and create an event pre WoF that creates one or more of the new biomes and maybe an other one post golem and the last one would be nice if it was post moon lord with the inclusion of some new end game boss. It could be something like the boss from the example game with parts that represents parts of the biome to symbolize that it's awakening was your doing when creating all the biomes.
BTW is the plan for this to be a big mod like thorium, tremor etc?
Just thinking out loud but it would be nice if a mod made the game have some story that made progressing trough the game feel more epic.