More Bosses: Ancient Dwellers

I think we could really use some more bosses. I mean, I think that we could use more challenges for the experienced players. Thus, I would like to pitch Ancient Dwellers. Ancient Dwellers are bosses from ancient times who can be either created from an Ancient Stone (found rarely in Nether Fortresses) to help you or to be found in biomes as adversaries. These mobs are like guards, guarding their biomes from being thrashed or guarding their creators. These are the size of Striders and can be much more powerful, with varying abilities according to their respective biomes. Please add this, cause it may be a bit modlike but it will be quite popular in the community and possibly promote Minecraft. At least add one or two of these mobs. Thank you.