Sorry, I didn't mean to harp on stability. Mostly I was thinking NSE interfaces tend to get complicated as they are forced to deal with more real-world corner cases. So a new interface is often going to look neater, regardless of what the future may end up being. So one doesn't want to get too excited about early comparisons (favorable or unfavorable).
From Augustine's laws
Law Number XVII: Software is like entropy. It is difficult to grasp, weighs nothing, and obeys the Second Law of Thermodynamics; i.e., it always increases.