No, I think it's a valid point!

The answer to this question depends pretty heavily on who you're building this for. If this feature is intended for the experienced, power Wikipedian, then any information you give them will simply slow them down unnecessarily; you just want to give them an empty text box, because showing them dialogues with text in will just slow them down. If this feature is for the totally new user, you need a bit more of a walkthrough, but not too much otherwise people will disengage.

We're going to drill down into our personas for this feature next week.

Thanks,

Dan