Customer Support reps should NOT be brought into brainstorming sessions during the Idea Generation phase because they lack customer/user knowledge.

What are entitlements?

How many fields per stage does the Case Path component allow?

Which records will a user be able to shared with the connected org while using Salesforce to Salesforce?

Once a product Roadmap is created, the best practices as defined by salesforce indicate that is better to leave it be and implement it, instead of going back and fixing it to the team's great loss of time.