So, if Toyota implements their Kaizen culture, it may influence on Cascade quality.

Anyway, I agree that the quality is very important issue. We here (and me personally) treat quality (in a common sense meaning) as one of the main decision factors.
And believe me, polish economy nowadays is one of the most stabile economies in Europe. And German industrial products are treated here as top shelf. Merecedes or BMW still have very good sales here, although generally auto industry has very hard times now.
The issue is that quality is not treated as a strategic advantage, because it's not calculable. The price is. You cannot tell how many percent Kaup is better than Meyer (or opposite). It means that if an attachment/truck/product is 20-30% more expensive than the competition, you cannot prove, that it is 20-30% better. And it's not a matter of "brand value". I think, that Cascade brand is worth more than Kaup brand, mainly because the range of activity and turnover.
I can understand your disappointment because of Cascade flops. Toyota may be a chance for them.
For me, personally, it doesn't matter if Japanese or Chineese, or Indian, Korean or some Arabic company makes a purchase of european brand till the production, people, culture etc stays here. This is only the capital issue. Maybe in some years the company will be repurchased by another guys.

Well... these posts are getting too long.
Nobody wants read such a lenghty scribbles ;-)
You are right - let's see what happens.