Following LF2 normal perspective, if the feets are like that then either the left one is underground or the right one is floating. In this standart perspective it's like we just have two dimensions, with no depth (this means that the backgrounds should have no depth, but BG and sprites' perspectives doesn't seem to match in LF2). If he wants to sprite the feet pointing at us, there is no need to change the perspective. If the perspective is changed, then the feet will create an oblique, non-horizontal line in the ground. That isn't a flaw by itself, but then you have to apply the same perspective for the whole body:
(The right and wrong marks are referring to the green lines, not the sprites)
I think It's possible to create weird perspectives curving these lines but compared to LF2 they will look weird, like drawings instead of sprites.
(I might be wrong, though, so feel free to correct me if I am)
Edit: In most of my sprites the char's right foot points towards the player, but I still use just "two dimensions":