OK - well as I am splitting up with my ENTP ex currently I perhaps better steer away from commenting on ENTP's. In all fairness, I think it just depends on the individual and how well adjusted they are, as with all other types. I worked with a male ENTP at work and we really got on great, he was very aware of ENTP short comings and used to joke about his own. He was very entertaining, and really did have genuine empathy for others, which to me made him a much more successful manager, and decent person. He was a bit of 'ham' with his play acting etc, but was very engaging and funny.
I had to go on a training course at work that lasted several months, which was led by an older female ENFP. We'd had a minor run in at work years before and I was a little apprehensive. As soon as I got into the training room though I detected she was in some distress, she kept up a very firm demeanor though, but on a hunch I sat next to her. She looked a bit surprised. At work I had 'mis-typed' as INTJ and to be honest I thought it was close any way (though totally convinced it was INFJ) and I let it stand.
There was a strict rule about having mobile phones on silent (which I agreed with) and she explained she was going to have to break it, as her mother was ill. She said she might become upset or have to leave the room, but remained composed throughout. Talking later, it became apparent her mother had end stage cancer and was dying at home as per her wishes.
The training was non-technical leadership skills etc, and there were a lot of very highly stressed line managers struggling to cope with staffing issues. My personal view was that staffing cuts, HR policy changes, and the almost total removal of HR support for managers had caused the issues, and we just need to adjust to cope with that. The ENFP managed the group brilliantly, like a virtuoso performance. There were angry outbursts and tears at times from some. She coped amazingly and kept the whole thing on track, I did what I could to help and I discovered we had a shared love of Shakespeare. There were role plays etc and I think some of the staff learned a lot. I wasn't dismissive of it, but I had been a line manager for over 10 years beforehand so most of it was no shock or surprise to me.
ENTP's and ENFP's always seem to want to network - and I find that hard, unless it's to progress an issue rather than someones career. She was a local magistrate and privately she urged me to get involved in it, though we had quite different political views. Shortly after the course ended, her mother sadly died. She said her mother had tried to prepare her (she was an only child herself, married but with no children, which in itself was a very sad tale). She gave individual feedback to everyone after it, which was very detailed and sent to the senior managers.
She gave me simply (unmerited) stunning feedback which I felt was in quite large part due to the interactions we'd had, and her own personal situation. We didn't even get to the half way point of the course before she 'outed' me as an INFJ rather than INTJ. I just laughed when she did, I think I knew from the start she would.
It's amazing how people can surprise you, part way through the course I found out she was deeply involved in adult literacy work doing voluntary work. The only negative she gave me, was to say it was sometimes frustrating when the group were 'waiting for me to lead' and I was silent. She said that following group debate they were waiting and turning to me, as if for approval. I did know from the group dynamic that I was the oldest man in the room, though there were older women. Why especially mature confident older women do that I don't understand, it must be a cultural thing. The silence part was undoubtedly fair at times, but there had been a lot going on behind the scenes at work, she was unaware of, and that I was not going to tell her about with her personal problems.
So (very) long story short - I think ENFPs and (maybe..) ENTPs can be great provided they look at the 'weaknesses' part of mbti as well as the strengths. I suppose the same goes for INFJ's too.
