I normally love moving around during the fight, pausing a bit here and there when my character actually CASTS the spell.
But everything in Yoshi's post just sounds awful!! Spells interrupted when an enemy gets?? And having to cast something like Sleep or Bind EVERY time you want to fight something??? This is going to make combat repetitive and dull REALLY fast.

I had so much excitement for 2.0 and had faith in Yoshi P, but these changes are going to make me hate playing BLM/THM
And if I can't enjoy my black mage-ness, then I won't enjoy the game..

Others have mentioned this on the thread and I agree: Let more powerful spells/bonuses come from standing still while casting, and have weaker spells or less rewards come from moving around. This simple solution will make it 1000x better.