i think water pressure systems should be added, and sort of like integrity systems where a certain amount of materials and shape makes it stronger or weaker. because pressure in water would make better simulations, and maybe some lag but I believe it would be worth the lag.
This is game breaking. All the saves utilizing water... Ouch.
Do the benefits outweigh the risks?
This would be great, but would it break saves? I am not so sure.
The best way to implement this is by being able to toggle this feature on and off. So I would probably implement this with the water equalisation simulator and call it a day.