I was thinking about this issue the other day in relation to one of the other action resolution threads.It's the difference expressed here:
"I use Intimidate."
versus
"I intimidate him."
<snip>
You see this less with casters, "I cast fireball" is still used as it was in older editions, but the players of martial characters often say things like "I use Twin Strike", which is the player talking about game rules, rather than the player describing what the character is doing.
I'm not sure if it's good or bad design in classic D&D that players of spellcasters essentially get their fictional positioning for free, because all there player resources are also, according to the rules of the game, PC resources.
The reason why it might be good design I think is obvious.
The reason why I feel it might be bad design is because it may be something that contributes to spell-caster dominance.