Multiple Block Blocks Plugin (or feature) suggestion

I think having a plugin (or feature) that helps making blocks that are actually multiple. Like doors, beds and tall grass. Just something where you would check a box asking if it has multiple blocks in it, you would specify how many and in what shape, then the textures of those blocks. they would all share the same triggers and properties but there would have to be more procedure blocks to help make lets just say a door, where if you click one it acts as if the top and bottom were clicked etc. just a cool idea! if theres already a plugin to help with this please link me I might just be an idiot. thanks for reading my plugin/feature suggestion!