I've tried Gallade as a lead before, and Leaf Blade was too highly specialized and I didn't like using it as much. Perhaps you do not enjoy the low accuracy Hypnosis brings to the table, but I enjoy using Hypnosis in the fourth slot of that set in order to sleep Hippowdon, forretress, and swampert, generally any bulky or slow lead that you can't break will usually take a sleep, which is very useful. Worst case scenario is it misses, but it's not too bad considering you can use Gallade late game and give your opponent a scare by threatening a sleep. It's a high risk high reward move, and I like taking that risk. Hypnosis has the potential to cover things you previously couldn't with any other move Gallade has in its disposal because it prevents your opponent from making a move. Furthermore, it is another option that Gallade has that Machamp lacks, and is one of the main reasons I would use Gallade over Machamp. Sleep is good.
Other than that I'd like to see a slash or a mention of hypnosis in the set and I'll approve.
eDiT: good job metanite thats how i taught you
koala tea control approved {1/3}