The bottomline of course of this match is about the money. But yes it is true, McGregor and Pacquiao will give a better fight in the ring as they will really give what they've got. Unlike Mayweather, which is always playing safe, counting technicals and others. And if this will happen, I think boxing fans will still watch this fight with enthusiasm.
Of course! Because I can't see any reasons why they are thinking about this idea except for money 
(What's happening in the sports industry nowadays *sigh). But the real question is Manny will agree on the deal? Yeah we all know that he is a "Yes Man" when it comes to any fight but this one is very different thing. I don't think he will not fight a fighter without a pro boxing career just for money.