Ain't yet any chart about usage in NU ? Would be curious to see the top use.
Also I think the problem in NU is that people try too much to fit a top tier, while there is the larger base of pokemon in it. Want to wall a Jynx ? Send Dewgong and use Encore...
I find in NU playing gimmicky is often the best way to win.
Also I don't think a sipnner is relevant, because the only pokemon who can set spikes are Roselia, Cacturn and Delibird. All slows and frail.