Raw diets, in general, as well as the rawpalaeodiet lead to weight-loss. Toxins from cooked foods get stored in the fat-cells you see, thus promoting weight-gain. I lost a good 15-20kg or so as a result of going rawpalaeo. The only exception is raw dairy which is well-known to cause weight-gain for most - unsurprisingly, it's also not a very healthy food.
I had rather severe muscle-wastage for years prior to going rawpalaeo. Raw meats etc. helped me to regain some muscle-tone like everyone else. I wouldn't say that a rawpalaeodiet in itself gives one extra muscles, per se, but there are many claims that muscles grow faster during intensive training, while on a rawpaleodiet, than on any other kind of diet.
As for senses, given that my nose was almost always bunged up during years on SAD, my sense of smell has improved considerably. Plus, moodwise etc., I am much better since going in for bacteria-rich raw meats.
