Why do people hate manic digger so? It's because minecraft took in from its own userbase all the ideas, asking them and implementing each one carefully before changing it to fit the game better. Manic digger didn't have to think, all it did was take around 80% of minecrafts ideas, put it in different code and made a few changes. (maybe a bigger percentage, but I think it is probably around that)
As long as it doesn't take the same road as manic digger, I see no reason to hate this.