New Boss summoning ritual

So I have this idea for a New Boss which whould change the game. To summon it you have to go to a junge temple and bring a nether Star and a special drop from the elder guardien. Then you open a portal or something and summen a boss monster (i am not Quite Sure which one but i am Sure you can come up with something). And then that monster gives you a key whith which you can open the endportal. Then the eyes of ender are only to find a way to the portal. With this your game whould take longer to complete and your 2 bosses finally make sense because before they were just useless, because you did not need their Drops.