What happens if global climate change kicks into high gear, or at the very least continues at its current rate and all that ice melts?
That is a ridiculous hypothetical.
There is no "current rate" of anything. All of the propaganda you hear on the news is bullshit.
Anyway, let us assume your fear-mongering is true.
Observable science is seeing massive chunks of ice being broken off and melting at an alarming rate.
No, "observable science" is not seeing massive chunks of ice blah blah blah. What is "observable science" anyways? You are employing a rhetorical mind-trick to hypnotize your reader. Stop it.
The earth is huge! Those "massive chunks" we see are tiny snap-shots within the freezing-thawing-melting cycles of the perimeter.
What happens when part of the ice wall becomes thin enough to be breached by the weight of entire oceans behind it?
Nothig happens. It is so cold over there that the fluid matter is frozen.
Alternative question for those of you who might be quick to dismiss global climate change as a hoax:
Who are you trying to kid?
Hypothesize what would happen if the wall were not there to begin with, or what would happen if we artificially removed a chunk of it.
If the wall were not there to begin with we would be flattened and frozen. No life would exist.
I realize that I'm going to be either ignored as a looney toon, or called horrible names and insulted by someone with bunchy underpants, but aren't hypothticals an important piece to science?
What is in it for you?
You are the 1 posting in a flat earth society discussion forum. How odd is that? Do you dare to tell everybody you know that you discussion stuff in this forum?