I have a question on the content of the page. We have hundred products on product group pages and if i put whole title of the product, then page needs to scroll a lot. I could make titles shorter, and cut it to 30 symbols, from total 70-10. As i understand when google bot comes to our page, he indexes also our product pages. So he knows the full title of products of that page. Will the product group page have the same seo value with short titles? Or it will be bad for SEO? Looks like it has less text content then, but google knows that this content is titles. Product group page is optimized for lots of sub-keywords with small search volume.
Same with index and /search/product. Can i make product titles shorter there?
I would try to find a good balance between usability and seo. Having a keyword or two in the link is a good for seo and you can still keep the link short enough for usability. I would be careful not to overthink this one internal link and its anchor text. I suggest you consider your overall link strategy.