Note: Since it said the mod requests are for art, I'm putting this under Modding Discussion. So, I was wondering if it were possible to make stackable staircases. I've looked around, and haven't seen a mod like it. If there is one, please link it. If not, then this is a suggestion to modders out there.
All modding ideas and suggestions should be posted at https://github.com/StardewModders/Modding-Ideas/issues as it allows us modders to actually keep a overview of all available suggestions & ideas, these forums are to busy to really manage that.