There are two mods I would like to see make a comeback. These may be available on other mod untilities/sites but I prefer a one stop shop so having these available on Steam Workshop would be ideal.

Packing Plant - This mod allowed you to create packaged "meals" of multiple foods and store them in a ware house. I loved this mod because I could grow/manufacture the contents, ship it to the packing plant, package it up and then store it. This eliminated having large storage facilities for the ingredients and allowed the beavers to get the benefits of all food types in one place.

Modular Roofs - I forget the exact name of the mod but it had multiple different shaped roofs that you could build to give some variety to your roofs and it had chimneys to add some character to your roofs. The current selection of roofs is ok but there are only a handful of configurations that work for certain houses. A fully modular roof system would be amazing where you could customize the roof as you build it. Maybe have a bunch of 1x1x1 blocks with different slopes, sides, etc. that you could just build up a roof instead of having predefined large roofs.