I think we have some pretty dynamic players on our roster as it stands right now. Some of them are really young and have massive upside.
I dont feel like we have speed issues, as we seem to be pretty proficient at scoring tries from our own half.
And thirdly, I get the feeling that Roberts may well upset the apple cart. The current team are bonded, playing for each other and the coach, etc, etc...Roberts does not strike me as a team player, similar to Hayne in that regard.
And fourthly, as has been mentioned by others....do we sign Roberts and then play him on the other side of the field to his usual, or force the form centre of the comp to swap sides ?