Thank you guys for leaving comments.
The weathering is on the heavy side, and not everybody might like it. Since we look at models, things are easily not too scale.
As far as the numbers, patriotic slogans etc are concerned: Russians (and Germans) didn't mark all their vehicles, you will find a lot of pictures showing tanks without any marking.
This is absolutely awesome-reallly well done weathering. Super realistic. Would I like more colour? sure. Did the Russians add more colour? Nope. Would I like some catchy slogan? Sure. Does that mean vehicle is unrealistic or not well done? No.
Would I like a diorhama? Sure.- only because this tank destroyer is so well done it deserves a story. This gets a 10 because for what you wanted to do-you seemingly did it perfectly.