My coach has me doing close grip power snatches in moderation since my regular snatches tend to lack 'pop'. In my case, these aren't a substitute, but rather a training supplement.
FYI, as the weight gets heavier, my grip gets progressively wider.
Yes, they do feel awkward and yes I find it hard to keep the bar close to the body! But to get the bar overhead fast, I REALLY need to explode/extend hard and fast...which is the point.
An extremely strong and experienced Ukrainian lifter at the gym cautioned me about doing these too frequently with too much weight, as he said they were very taxing on his shoulders. Granted, he puts up a LOT of weight. At my current level, that isn't a problem.
Not knowledgeable enough to comment 'mistake 13'. I'll leave that to others.