Would it be possible to have a block that can accept two seperate blocks similar to the way a bed works, that looks like two slopes together?

Because you can't have two slopes in one space, this could perhaps be a workaround?

Would allow for situations like this, where at an angle you have two seperate blocks smoothly connecting, the blue highlighting the doubleslope block, excuse the paint.net art lol

Use the block mixer of Malisis Doors: http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/2076338-malisisdoors-1-7-10-1-10-1-26-10-2015

Related to Malisis and Carpenter, some time ago i suggested to implement the smooth animation of door opening closing like malisis, but i havent get any feedback. Why?

Not really worth the amount of work to add the feature.