Ice cave ideas

So I love the ice caves but I think it would be really cool if there was these. You can craft Ice into ice glass!! Penguins and they can slide on water to create ice and you could maybe make frost walker only obtainable or a crafting recipe from penguins! And instead of boosting the boats from the back they can pull you on ice? Or maybe you can ride them? (They should also lay eggs and protect them!) Also with the new snow bricks you should be able to put two down and a jack o lantern (not carved pumpkin) to get the reinforced snow golem!! You guys should also add the melon golem and the iceoliger who you can find at ice outposts!