Like in Storymode, every small mob should run away from the Witherstorm when it gets big.

That would be really cool. I agree with this suggestion.

I agree with this suggestion, it sounds cool

Very good idea!

good suggestion! I think all animals and monsters should try to stay away from the wither storm during phases 6-7 as well

big yes, also we need enderman to angry at wither storm. and use it in phase 7 to feed wither storm and make hole

I think the endermen should just get mad and that's it. maybe they can teleport while suddenly holding a new wither storm "flesh" block to make it seem as if they just came back from attacking

same here

Implemented as of the Prereleases