It's hard to tell who is doing well and who isn't in the game. I could take off a player i deem to be under performing only to find out he has done well with ratings of 7 or above while a player i leave on might get a rating of 5 at the end of the game.
The live comment feed does not help, at all. The only use for substitutes is to change formation.
This has probably been suggested before but i just wondered what everyone thought?