One of the challenges we had at Pardot was balancing the different requests from our constituents. Sales wanted one set of features while customer success wanted a different set of features. Then, support had their own desires separate from engineering which wanted to make a number of behind-the-scenes improvements. What to do?
We eventually arrived at doing a product theme every quarter where we alternated between heavy market-facing improvements (lots of shiny bells and whistles for sales) and heavy back-end improvements (lots of infrastructure work, fixing of nagging issues, and general product polishing). This process worked well in that it was clear to our different stakeholders where the emphasis was for the quarter, along with the expectation of what we’d do the following quarter.
Consider using product themes for each quarter as the startup grows and product demands increase.
What else? What are some more thoughts on quarterly product themes?
David Cummings on Startups 
Try quarterly music themes to accompany your seasonal product themes. A tiki bar summer. Superhero music for the autumn sprint.