You obviously weren't around when lights would break their legs on a pebble. I feel like fall damage is still too extreme in some cases, and certainly any more would really hurt jetting lights. Straight to internals is the worst idea i've heard.
I was around when lights took damage from every little bump, and that was completely messed up.
But as I said; larger mechs taking more fall damage would help with game balance.
And straight-to-internals-damage for falling would be a good wake up for pilots who use their JJs badly.
And, currently, it still takes quite a few falls to leg yourself in a light even with your armor gone.