Hello sir, i would like to submit one suggestion.Yes we do take suggestions from all sorts of places, whether or not we end up implementing them is a different topic tho.
For example: i want to make a house with bamboo sticks covering it's exterior. As a result we are getting a huge amount of objects each one of them with it's own lines in the save file. The problem is if you made a couple of buildings like that the save file is loading for eternity.
So when i saw that you are implementing the custom prop system i thought that it would be the solution for this problem. But in fact that system is just saving groups of props. Is it possible to make it that it would combine the group of props into a single one for that prop to have just lines for one object in the save file? I think it's gonna be a big step in optimization especially for big sandbox projects.