I don't think it's as absurd as Mr. Julian would have us believe. I remember many meetings when the subcommittee met and determined the list of witnesses, but when it came back to committee we had to debate it all again. In fact it's highly inefficient, and MPs' time is short. We have a subcommittee meeting and then all the business comes back here anyway and we just restart the whole debate.
I don't understand the efficacy of having a subcommittee if we don't respect its decisions. I don't think it's as absurd as you say, Mr. Julian.