Seriously now, nobody wants a bunch of squids laying around where you have a miniature 2x2x2 pool....
I was thinking something like a requirement of the body of water being at least 7 blocks deep, 20 blocks wide?
This is to prevent the annoying-ness of Squids being everywhere that they shouldn't be, and to prevent Squid-Farmers who just spend all day exploiting Squids' spawning requirements for infinite ink sacs.
Also so Squids stay in the ocean ONLY, where they belong! (and some fishtanks)
@Consequence6 :squids still do not despawn or swim up
in general i personally like the 1*1*1in any light level spawning capability because only 8 squids can be spawned at a time after the world has rendered for the first time [or so i thought] so this helps get more squid.