For future reference, when asking a question, you'll often get a lot more responses if it is posted on one of the forums, like the Twins Talk forum.
What wasted spaces on the 40-man roster are you talking about?
Obviously a lot can change on our roster before August 1. I would really like to see Hendriks get a low pressure chance to see if his success can translate. Benson seems like he is getting his head screwed back on straight. Does Arcia get a look?