Yes, more Snake players are always good, not only is he the epitome of manliness alongside Captain Falcon, his recovery is just amazing

I was just playing the game today, and I completely murdered my friends in a 4 player match with him. But yeah, it's like I said and like you found out, the mines are a great surprise attack. I never stay on the ground to place them though, I just drop them from the air between people and detonate, or in a place everybody commonly stands. If you're lucky they do attach on the characters, so that's kind of cool too