How about paying for campaigns trough LN? What you think, opening a channel with the campaign manager and close it when the campaign is over, just to boost a bit the LN?
From a campaign manager's perspective, this is going to be annoying 
A "pay all" from a spreadsheet is much easier.If LN would allow payments without first sending a payment request (I'm hoping future versions will allow this), it could be a very cool feature for a campaign that pays for every post. Combined with a scraper, you could literally be paid a few seconds after each post!