Introduction:
I propose a feature in which the players can choose to customize Adam and Eve in sandbox mode. The screen would have five key parts, described below. The player would be able to randomize the genes or fine-tune them, including the unexpressed genes as well. Attached is a rough outline of what I think the menu could look like, as well as a description of each feature labeled on the image.
Nicheling Name:
A simple display of the name of the nicheling the player is editing, inside of a dropdown menu that they can use to switch the nicheling they are editing.
Nicheling Display:
Pretty self-explanatory, just a display of the model of the nicheling the player is currently editing. The player would be able to view the model as they can in the family tree.
Randomization Button, Confirmation Button:
The player can choose to randomize all genes, only unexpressed genes, or only expressed genes. The confirmation button will trigger a pop-up that says something like "Are you sure that your nichelings are customized to your liking?" then the player can choose "Yes, save customization and exit", "Discard changes and exit" (which will randomize the nichelings as normal), or "No, go back to customization menu".
Gene Selection Menu:
A menu of all the genes. The menu would have a scrollbar and the option for the genes to be sorted by category or name at the top. Hovering over the gene's icon will enable the player to see its name. Clicking the gene icon will display it on the model, and double-clicking the gene icon will open a pop-up. This pop-up will have the options to add the gene as an expressed gene for its gene slot, add it as an unexpressed gene, or cancel. It is up for discussion whether it would be better to have all genes usable, or only those the player has unlocked.
Gene Description:
This menu will have the in-game description of the gene, as well as the stat increases and decreases it gives.
Summary:
Overall, I think this would be a very useful feature for the game for players that want certain genes in their starter nichelings.