says in the rules that the world type must be default.

@Astronomiez pre 1.14 would be interesting though

@Wunderbars you can't mine spawners even with silk touch, still all blocks is probably not gonna happen.

Idk if its not in the rules, go for it and see what happens.

I'm pretty new as well, but I think the mods will change it. If not, they will probably just reject it and tell you to resubmit. You should probably just wait until they say something.