Don't know if this is new or not but I have added a simple icon in the soldier sprite
to indicate if the soldier is kneeled or not.
I also add this trick to Robin's Spitter, which is difficult to see sometimes.
Is so simple that I'm a little embarrassed in presenting it
Look at the pics, self explanatory...
Sure you guys will end up with a better icon
(edited to give credit for the sprites:
Grey Armored Vest by Ryskeliini & Robin)