I rate Blakely as well He finds plenty of the ball and we need another inside player. To a degree he has been a victim of the need to develop the other young mids (Cerra, Brayshaw, Serong etc.), and the recruitment of Aish and Acres, even though they are wingers and Blakely has played his best footy off half back. I would play him ahead of Acres, and probably Aish. His defensive efforts are certainly not worse than Acres. This is his time to cement his spot.
Crowden has also copped a bit of criticism on here as well but I like him in the team. It needs to be considered that he would be on reduced field time and he is down the queue for a spot in the middle so he rarely gets to play in his 'natural' spot. I reckon he would make an okay forward pocket playing close to goals. His kicking is good.