Originally Posted by
SinsI
What if you are Tiny and facing a Huge monster? Do you really want dragons easily slain by a village of commoner Gnomes?
Second that it should reduce dex to AC, up to "flatfooted" status.
Heavily armored characters should be favored by these rules - armor has only a few weak points, and only one or two opponents have access to those Achilles Heels, the rest are actually making it harder for them to hit.
And the attackers should receive a to-hit penalty if their number is above 4 (i.e. some of them use reach weapons).