Nah. This isn't even the first time The Doctor has had three companions before (Ian/Barbara/Vicki, Ben/Polly/Jamie, Romana II/K-9/Adric, Adric/Tegan/Nyssa, Tegan/Nyssa/Turlough).
I qualified it with "At first anyway" because in the new series you had Rose, Mickey, and Jackie as some kind of companions as their series went on. I just wonder if it was too crowded because you're also introducing a new Doctor. I just hope the Companions don't overshadow the new doctor, especially with this being uncharted territory for the series as a whole. I could go with no more Claras for a while.