How extensive is their customer satisfaction survey question library? When you have ready-to-go templates that cover a broad range of ideas, you don't have to re-invent the wheel. Can you use the customer satisfaction template as a baseline and then customize it to fit your needs? There may be very little time required for brainstorming.
Another thing to consider is the flexibility of the template. Is it possible to tweak various aspects of the customer satisfaction template to fit your unique needs?
How about utilizing advanced question types and additional components such as logic branching and scoring? Is your solution able to offer that? In addition, how about custom themes to alter the look and feel of your survey? QuestionPro is able to perform all of the above.