What are your company goals for the year, and how much is dependent on new sales vs retaining exist customers and growing customers?
It's important to know, as It can cost five times as much to attract a new customer, than to keep an existing one. But if there is no clarity on this, ask the execs - What % should we allocate to new sales? An effective leadership team should be representiative of other voices too , like marketing, customer success, support etc. Make sure you reflect that voice back effectively.
Bring your data to the table so that you can share your perspective on the risk to losing existing customer as well as the oppotunities to upsell or cross sell to them.
Bear in mind that sales typically drive incremental growth not exponential growth, so manage expectations accordingly The Roadmap is a reflection of your leadership's priorities, and it's your role to help them make informed decision on investment priorities.