I think the first few stories of a Doctor should be given some leeway. I think it often takes a while to 'find' the Doctor and while in this story he is a bit hyperactive, as someone put it, it can easily be put down post regen stuff. If it had lasted at this pace for his entire run then I think it would have gotten old very quickly but it wasn't too bad I don't think.
I'd agree with this. Those first few stories can be a bit up and down in quality, especially when it comes to writing the new Doctor. I think this was helped though because SJS was so established. He wasn't too bad though. I liked him in this.