The addition of Grimes changes things. He does a similar role to Sheaf, but he is better at it.
If you were one nil up with ten minutes to go away at Sheffield United, you would want both of them on the pitch, but for the large part playing them both together will only hold us back. Sheaf will want to go forward, but he really isn't that kind of player. He slows down our attacks and can't shoot or set up a final pass. That is however, something that Torp can do.
A midfield three of Grimes, Rudoni, and Torp is quite exciting and would get the most out of the team. I agree that we need to have better defensive options for certain times, just not all the time. With Grimes here, he should be playing every minute, but I cannot say the same for Sheaf. Given that he has a lot of questions over his ability as a captain too, I really think we should be looking to move him on for these reasons. I am just not sure anyone is going to want to buy him for a respectable enough price.
I think we are also overlooking Eccles who is more than capable, and Allen who can do a job if necessary. These players don't probably get enough credit in that respect.