If the project requires a team it works best when the whole team is remote and/or extremely conscious of using written communication. That is, if you want the remote person to feel like they are a part of the team. If you have outsource contractors it doesn't really matter. You just tell them what to do in meticulous detail anyway. But, if you want a contributing team member that buys into the company, make sure they are included in all communication. The easiest way for this to happen naturally is if everyone is remote.