You seem to link facing to hit locations. May I ask why?
Because that would be the only concrete linkage between the orientation of the miniature and defacto facing of the creature.
All facing means (to me at least) is the direction you look at. Or rather, the direction your entire body "points" at.
I call that "orientation, and consider it a cosmetic effect.
By giving a horse a 5x10 space, one can flank it in such a manner that it could not logically attack you.
If you assume that it spends the entire round in the position pictured. 6 second rounds must be time abstracted, that does not also mean we have to accept shape abstraction as well. (Or at least, the degree the 3.5 rules seem to want.)
But it does. Somehow. Even though I'm sure its legs can not bend that way.
They don't have to. At some point during the round, the horse made a 44 degree cant and kicked you. Not difficult to picture at all.
By giving it a 10x10 space, one assumes that it has enough room to turn any way it pleases in order to attack.
But perhaps that is too much of an assumption. By virtue of the fact that a horse
might spin in a circle, creatures flanking it are prohibited from approaching less than 10' of one another when doing so? No, that's ridiculous.
We eliminate the half-abstraction, and gain simplicity and common sense in return.
Au contraire. By creating "fighting space" that explicitly exclude creatures and allow them to be attacked/in line of sight, and requiring "squeeze rules" to allow a creature to pass through passages that it would normally be able to pass through, common sense and simplicity are harmed, not assisted.
What are you talking about? A major gripe of mine was that big creatures, somehow, could not squeeze themselves into smaller spaces. It should be darn obvious that they can.
Ah, but you need the squeeze rule now to tell allow you to pass through passages that a creature would easily be able to pass through according to its actual size, but not it's counter size. We aren't talking about taking extra effort to wriggle through somewhere here. We are talking being able to casually stride here, because the fighting space of some creatures is SO much bigger than their actual size.
You are putting words into my mouth now. Don't.
Not in the least bit. Trampling is pretty tpyically how a horse on a chariot attacks. Using the old rules, it is pretty easy to see where a horse might affect... a creature directly to one side of the other of where a horse really is. Which makes sense. But under the 3.5 rules, since they don't follow the natural shape of creatures, all of a sudden you have to make special rules for the "attack zone" of a horse to make sense.
And woe betide you if you want to make a chariot with a 4-horse-wide time...
How much cover do you think humans should get behind a 2.5' pillar? If you stand the right way, even a 1' pillar should suffice for most people to get full cover.
This is impossible even in 3.0 however.
Since 5' is the resotion of the grid, I am not seeing the bearing here.
If a horse stands behind a 5' pillar you need only take a step to the side (not a 5' step, you can stay in the same square) to see its rear. Half cover. Just like the rules say.
Who is talking about a horse here? I am talking about a creature that is less than 10' wide that all of a sudden, because of his 10'x10' wide "fighting space", is all of a sudden vulnerable to attack.
I could see a 10' horse's rear sticking out. That's not the issue.