Permalink structure and categories on Joomla

[HasanPK]

Hey all,

I'm handling a website for a youth telecom brand. We're migrating our website from droople to joomla with a completely new design. The entire revamp has been outsourced and I'm responsible for overseeing it.

As it stands, our URL structure is something like www.xyz.com/category/item

I want to change to category/child-category format: www.xyz.com/category/child-vategory/item

In terms of SEO, how would this change impact results, pros and cons?

Cheers.