Note: I plan to build a dungeon, I want to make it as fun as possible, but im going to need information, what people want, and more.

I have an idea for a dungeon that is heavily inspired by the Frostbain catacombs, but of course i want to make it to suit everyone. here is what I already know that people want:

Not 150 pigmen spawners in total.

The ability to solo the dungeon.

A hard boss.

1.5 redstone features.

So I need to know the following:

is there any mountainous places past z -2000?

Whats the spawn egg for a giant? (last one was a cow spawn egg)

would people LIKE a new dungeon?

thanks.