How about no deadline? I just don't see the rush in setting a deadline. I don't think we'll get a lot of people submitting briefs by March 20 if we send this out now. I would prefer that individuals and organizations have more of an opportunity to submit something. We can also invite those who we want as witnesses.
It's not the biggest deal for me, but I would think a later date makes a bit more sense. We're not going to start this study until March 24. I don't think we need all the briefs in before we even start it.