@HalosGhost, I must respectfully disagree with you. Just because there is an if in the sentence doesn't make it a hypothetical. I am assuming that that is the reason you're calling it a hypothetical; please forgive me if I am wrong about that. The reason the sentence needs the subjunctive is that it is making a request. For example, you can easily change the wording to this:
Would you mind that the conversation be conducted over Skype as the reception is clearer?
Notice I have removed the if, replacing it with a that and changed the verb to the subjunctive be. This sentence is equivalent to the original, but no one would claim it's a hypothetical.
But even if one were to rearrange the sentence to make it into a hypothetical, he still wouldn't use the subjunctive here. The reason is that not only the statement must be a hypothetical, but also the writer must believe that the stated hypothetical is either impossible or extremely unlikely, neither of which seem to apply here.