I do love the French Drop. Not the most convincing of all the moves, yet the first one I learned. So I assume a bit of nostalgia is connected with that age old sleight.
Has it been explored enough? Did you know that you can vanish a stack of coins like that creating a nice click pass? Did you know that if you have a finger palmed coin in the hand that supposedly takes the visible coin you get a switch? Just saying!
If you can only do the French drop, now you have a switch and a click pass too. You don't need to thank me.