Look, I was a bit sad at first when I heard about v21 was going to remove maps to, and a lot of other people were too. But we got over it. Besides, wouldn't you rather have awesome looking shadows and shaders rather than poorly textured maps? And even if you can't run shaders, look at it like this, the development process will speed up without them.
And plus, if you still miss them that much, you can download a v20 or lower version of Blockland and you will have maps.
So seriously, stop making these topics. There are billions of them. All of them have the same answer:
No. Shadows and shaders are here to stay.