You could ask other VCs. (VCs love to talk. And, it would help you to talk with them when you don't want money from them.)

Heck - you could ask these VCs what they want. If they ask for something that you don't have, you can ask how producing it moves your biz forward.

It's generally accepted that you shouldn't build technology that won't be needed when it's ready, so why would biz artifacts be any different?

All that said, does your current biz plan satisfy your needs? If it doesn't, how much is that costing you?