The enderman makes a "player hurt" noise when they touch water or lava.

Also, it doesn't show me holding items with both of my hands.

Am I able to configure this myself?

(On a side note: which servers can I play this mod on? I would prefer playing with people than by myself.)

Enderman player hurt sound is a bug.

Making changes to rendering holding items in first person is hard; not sure about second person third person though.

I can't answer questions about servers, sorry.

Oh I mean third person. Usually, it shows a model of an Enderman holding their hands out when they're holding blocks. Also, what is second person?

¯\_(ツ)_/¯