Im not sure about moving Collins into midfield, yes he has decent feet and can bring the ball out of defense, but taking the ball on the half turn in midfield and passing the ball forward like Cullen does for example is a completely different skillset that I just cant picture Collins doing. Not saying its not worth looking at, but Id have my doubts that it would work. McGrath was exceptional.
On a side note, I seen that Argentina beat Panama in a friendly last night with 2 late goals. It made me wonder what the reaction would be here if it was Ireland vs Panama and we just about squeezed past them. Id have no doubt that the knives would be out out.