I'm working for a large high tech company as a full time seo
specialist.

We have one main site (pr 6) and other 21 sites which are either small niche sites which are related to the firms main theme and others which are local sites in different languages.

All sites are hosted on the same server and that cannot be changed for various reasons.

In addition the company has distributors all over the world.

There is a request to consolidate all the sites into one Hugh site.

My question to you SEO professionals colleagues , in terms of the ramifications on SEO, which option is better?

Thank you.