There is currently a squashdown at 6 boxes, would it be not too farfetched to see them add a squashdown at 12 or 11 boxes, since that is about the halfway point of the game?

6 boxes, is almost at the 75% point of the game, so it would be fairly reasonable for them to add the 12/11-box squashdown, even though with really bipolar boards with more of one color than the other, that may not amount to much.

i think they should do it at every offer myself, to make it neater

I think they should do it at 8 boxes!

personally I don't see why it needs to be done at all

I agree!

I don't think it should be done at all, because we see it differently to the contestant.

and they should also do it on that board aswell

That would be hard.

It would be crap if they did it earlier, as in the early stages it's clearer what's gone and what's still there if all the amounts are in their original positions!