As mentioned before, Feaster alluded to the idea that the non-regulars at camp are the ones who need to show their value to the organization.
A Monahan and Knight have a very good chance to actually make this team, so it makes sense to keep them on the roster. Poirier and Street are not going to make this team, but Street has had a year of investment put in him and an NHL contract, so it makes sense from the Flames perspective to keep him up and judge where his developmental path is at, compared to an 18 year old first round pick who isn't ready for the show.
Cundari is a similar situation. The Flames brass knows what he can bring and where he's at. He's not going to crack the top 6 right now, and his development would be useless as a 7th defender. It makes sense to test a guy like Billen's to see how he would fare in an NHL call up. It can also explain why Kanzig is still there, as the Flames don't know him in this sense, and want to continue to see how he fares with NHL competition.
As a fan it sucks, we want to see our best prospects play as much as they can. However from an organizational standpoint, the Flames have to evaluate the team which is actually being iced this season, and the callups who will be playing intermediately.
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