Well, here's something you may understand... People hate farming as it is, sure it's easy to get. Ravaged takes like a day to get full? Divine takes 3 days about to get full. Then you add all up the others and its about 2 weeks of farming. I haven't been on much to know what's been said or added.
If they make a new world boss, what's the idea behind it? Where does it fit into the lore of Icecold? Where will it be and what will it drop? If neither, they won't do it. Meltankos and Pythios are hard as they are. Pyth is even harder. Melt is more of a "meh" boss. Adding another World Boss to it... it means even more people going nuts over it. In a few months it'll die out cause then everyone will have what it drops.
I don't fully support this idea, I'm sorry. I just don't think it'll fit into the Lore. Others may, I'm just saying my opinion.