This is the best thread about McGregor since I have joined this message board. The majority of McGregor related are either about people nut hugging him fervorously or hating him senselessly.
I think Conor is one of the best strikers ever in the UFC. He is very good as a counter puncher and he is very good moving forward too.
But when it comes to his grappling, you can't make-believe that it isn't a glaring issue. This is a weakness of his, if he faces a fighter that doesn't have a problem with his reach and can time his take down attempts very well, Conor will be unable to really use all of his range of striking, he won't be able to kick which is an important part of his game and so he will be unable to use his boxing as effectively too.
It is all a matter of how long it will take for a fighter with the right skill set to face him.
I don't know if RDA will be the one. He's the type of fighter who cares more about his own strengths and own work than one who focus on game planning for his opponents. That is a bit of a common trait in brazilian mixed martial artists.
And from some of what Cordiero said, it seems their approach to Conor will be identical to the one they used against Pettis, which I believe will backfire very hard. We will see.