Thyrwyn said:Allow me to rephrase: "In the old rules, in certain situations, one or two fighters could block a line of approach; in the new rules, in those same situations they can't."
1) This is no more relevant than saying that "in the old rules, high level characters got iterative attacks, in the new rules the don't." New rules, new tactics. In the new rules, it will be much easier for every one to see where creatures can move and will be able to prepare and respond accordingly. I concede that they will have to prepare and respond differently.
It is more relevant because you would think two fighters standing between a monster and a mage would form some kind of barrier. With 1-move diagonals you would be wrong.
This a world experience assumption that is much different than the iterative attacks which are a game assumption.