What you think. The Reason why I think Squids should die without water because, well..That's nature in real life. Fishes + Other Sea Creatures die without water. And fishes, would make Minecraft better. Instead of fishing you could catch small fishes that needs to be cooked and would only heal 1/2 hearts.
I don't really have an opinion about the squid thing. Do you mean that you could catch visible fish in a body of water? If so, then it sounds cool but somewhat redundant with the fishing mechanic already in place. Jeb also said in his AMA on reddit that there probably won't be any visible fish in the game due to there being too many entities (read: lower FPS) that you probably won't even see due to how dark/deep large bodies of water are, so there probably won't be any visible fish unless someone finds a more efficient way.
WHAT DO YOU THINK! POST A REPLY BELOWW!
THEN YOU PULL THEM OUT OF THE WATER AND BEAT THEM TO DEATH, THEN HARVEST FISH ITEM.