Im in support of allowing soloing missions. I realize that TF/SF are geared to team play, but so much is gained from their completion that they should be able to be completed by people who cant dedicate so many hours AT ONE TIME. I love the Ouros flashback methods that i can log off then come back, so as a method of "unlocking" this option, it could be a condition of after getting ALL ouros badges or something which then adds TF/SF to the list of missions