For myself: while I enjoy the nostalgic memories of DF bugs and unintended features, I think it is very important to recognize that you should want the game to change, and these problems to be fixed. We should all want a better, improving DF, not one that remains static so that we can indulge in pointless nostalgia.
I recognize that things must move forward, and that there are enough dangerous things in other areas to keep us occupied [Jabberer, I'm looking at you]. I was intending more to state that the water seems a little too safe. While there are beasts in the oceans, they're few and far between, while there's no real threat lurking in freshwater areas anymore. Yes, carp are definitely not the monsters of legend they turned into due to bugs, but it added a challenge to obtaining/moving water. Or course, now that farms must be irrigated to be viable, it's definitely a good thing that I don't have to worry about killer fish grabbing the dwarf or dwarves carrying out that job.
I guess I just want a little more danger in the non-subterranean waters now that the scaly threat is gone. Maybe Giant Toads and the like could have a small chance to spawn in murky pools aboveground.
However lets not let the carp's History die!
A good solution. Engravings all around. Maybe someone could make a sort of insert like they did with Cacame Awemedinade for old-school carp.