If you are interested in my opinion I would add more details like fees or restrictions by country which are critical for every user.
I can speak of cex as I use it - they have a bit compicated fee structure, for example. The fees are different for each payment method, and it would be really useful to mention them (like here http://www.katiewager.org/cexio-review).
I believe it applies to all the exchanges in your list, and for a potential user reading your reviews that info will be valuable. But you really made a great job.

OK, to me OP indicated your aim to inform about ways to purchase BTC ... which localbitcoins is.
Kraken is very slow last few weeks that's true, but still a trustworthy exchange worth mentioning.

Few sites to add: kraken, localbitcoins ( I have good experience with both) and coinmate

Just a garbage website filled with your referral codes.  You don't care if a site is a scam, as long as you get your referral.  :/