Great work, as always!
I think Gollevainen would like to see towed artillery.
Btw. - I saw 2S1, 2S3, 2S9, 2S19, Grad, Uragan and Smerch, but I don't remember seeing 2S4, 2S5 or 2S7. (and I'm not suggesting You're supposed to draw them, just that it's may still be not "all")