Just wanted to update that the project of updating and improving these pages has completed.
Since the beginning of the work and during the changes, the site is seeing constant traffic increase from Google.
These last days, it is about 6000 more visitors per day.
We took a decision that even if G penalize the site, we will stick with the changes (It didn't make sense to stay with bad pages).
We will continue to improve other sections of the site.