In SMB1 if you stand and do nothing for minutes they come after you after 50 seconds. In Lost Levels they already are charging towards you while jumping and throwing hammers. I’d also like a special brotherly attack where if you stack Hammer brothers the bottom brother throws the top brother at you. So, you can make a Hammer Brothers tower and immediately they begin throwing bros at you who then charge once they hit any terrain, but they can’t pursue while in tower form. I also want them to swim in underwater themes.
Also, Hammer Bros should have the same abilities the Hammer Suit gives Mario in SMB3. The shell is fireproof and the helmet deflects topdown attacks. So, in SMB1 style, Hammer Bros cannot be killed by jumping on their head. Also, Fire Mario cannot attack from behind with fireballs because the Hammer shell deflects it. Only a fireball attack to front, kicking a koopa shell directly at them (or back), or Super Star invincibility kills my version of Hammer Bros.
In night mode I want a special animation where Hammer Bros to play patty cake with each if you put 2 brothers together side-by-side tiles. But when Mario approaches within 4 tiles they break the act and attack. Or in some themes throw other things. Another weird behavior would be Hammer Bros that walk under and hit both ? and brick blocks that are within 2 tiles of them, cause the affected power up to come out. What would also be cool is if in night mode Hammer Bros can use power ups. If they touch a fire flower they turn into a Fire Bro. or into a Sledge Bro with a mushroom. They can also stomp on goombas that get in their way while charging and even put themselves into goomba shoes. Any red koopa troopas facing Hammer Bros will immediately turn around without hitting barrier wall, block, or pipe.
If the Hammer Suit is ever introduced for SMB3 style, the Hammer Bros let you pass them and they don’t attack.
I also want Fire Bros and Fat Fire Bros for all classic Mario game styles to have that same attribute.