I like the 'ink blast' feature that appears in the Pocket Edition but not PC. It helps make killing pretty much the easiest mob to kill a bit harder (they don't run around like land creatures do.) And dyeing the ink just brings a feel of a certain other video game I can't help but love... they can finally put it in Minecraft (you will get a cookie if you know what I'm talking about)
The camo squids are an interesting addition with a nod to their real life counterparts, though this feature, paired with ink blasting, might make squids OP toward players. Good thing that their spawn rate is low.
Those baby squids are really cute! But what is the point of breeding squids? They don't usually spawn in player-generated water pools (though one time I did find a squid in a swimming pool I built) and I've never heard of Minecraft squid farms.
Squid rings in Minecraft might only be added JUST for those who want more seafood in the game (even though I don't like it irl, I'm fine with that in Minecraft.)
Colossal/giant squids/krakens add some more danger to the otherwise pretty boring sea without Ocean Monuments.
I'm all for this! Support everywhere