For larger sales teams for companies with many products, it is important to limit the number of products that the sales teams are able to see. This assists in them being able to more quickly select the applicable product from the products list, rather than combing through a long and unorganized list of products they may or may not be familiar with.
It would be beneficial to allow the salesforce user profile to drive the visibility of products and ideas in the ideas portal linked to salesforce.
You can now organize the workspace list by line. In your ideas portal settings, select the lines you want to show and they will appear in the Salesforce workspace selector as well.