Animation type 1000 monster quadrant possibly contains incomplete directions

[Incrementis]

Source: https://gibberlings3.github.io/iesdp/file_formats/ie_formats/ini_anim.htm#formINI_type_1000_1

ISSUE:
Available orientations (sequence → direction):

• 0 → S, 1 → S, 2 → SW, 3 → SW, 4 → W, 5 → W, 6 → NW, 7 → NW, 8 → N, 9 → N
• 10 → NE, 11 → NE, 12 → E, 13 → E, 14 → SE, 15 → SE

Could be

• 0 → S, 1 → SSW, 2 → SW, 3 → WSW, 4 → W, 5 → WNW, 6 → NW, 7 → NNW, 8 → N, 9 → NNE
• 10 → NE, 11 → ENE, 12 → E, 13 → ESE, 14 → SE, 15 → SSE

EXAMPLE:
The animations in BG2EE doesn't seem to use more than 8 directions for this animation type (at least, that's what my findings suggests), so there's no guarantee that the suggested extended directions will work. However, it's certainly possible. For example, 1100.INI contains extend_direction_test=9, which indicates that more directions are available even when not in use.

Review/testing is needed.

[lynxlynxlynx]

Since you're working on an exporter, please just try with a model exported to 16 orientations and see if you can make them appear in game. I don't think this works in the originals and the ini key you mention is documented for something else.

[Incrementis]

Yes, I will. I've marked it in my project.
Just for the curious reader: It may take some time (weeks or months) before testing, as there's still a lot of other work to be done.