When seeing your 6th and 7th image (uneven ditributed cylinder and "teeth" faces because of "optimizing" face count ) somehow this post came into my mind :
All you need to do is not terminate the tris right on the edge of that back side. You could delete the back and re-extrude the same edges without terminating edge loops and fix it in less than a minute.
Now a client or lead comes and asks for changes and you do that again. A chamfer modifier (or shader) would remove the need for this process entirely, keep it a ton more lightweight and easy to edit
New playable species and reclassification of existing species + average heights. Races fit in a 1x2x3 meter cube. Minimum and maximum player race heights established.