I think it might be interesting if in the future we could use some sort of built in tool to create ways for people to interact with your saves, instead of using sprk to click buttons, maybe we could have a editor similar the deco editor where you could design a very simple GUI for your save.
It could include a text editor and simple buttons, buttons really would only have to create spark, and the entire thing could be a retractable UI so it doesn't take up space. it would also be a interesting mod idea but I feel like it would fit better with the base game since there really hasn't been many updates to the UI.
What it would do is allow for saves to have more space dedicated to the actual creation since you wouldn't have to dedicate that part of the save to buttons or information about the save.
while it isn't something that's necessary at all I think it would be a cool way to further detail saves and allow for more information to be displayed since there is a size limit to save's descriptions, maybe you could program specific lua commands for the UI or something