Current functionality allows an admin to select a view from CRM to filter the product records in Books that sync with CRM.  I believe this is a little backwards as the CRM system 'shouldn't be the primary source of Item Data when a Tennant is using CRM and BOOKS together.  Zoho Books (and inventory) have a significantly greater depth for managing product data, and typically users in CRM are interested in saleable finished goods and not the component parts.  

My suggestion is to modify the current option (either add to it or change it), so that an admin can select what categories of product are synced from BOOKS to CRM so that only 'finished goods' are pushed to CRM for sales people to work with.  

As an example, we have items that make up a bundle that are not for sale as individual items (for example, a box that makes up part of a kit, or a product label that's attached to an item in a bundle) are not items that a user of CRM needs to see.  Being able to restrict (from books) what items get pushed and synced to CRM would make it much easier to maintain only the items for sale in CRM.