Julia might be. It's certainly higher performance from what I understand, and it offers some syntactic flexibility that I miss from R when using Python (Python could never have a fully complete dplyr). It seems from afar to be rather more complex than those languages, though.

I actually think that from a programming perspective, Julia is much closer to R than Python, because of the focus on generic functions rather than objects as a means of abstractions.

It's still a little too wild-west for my tastes right now, but I want it to improve as I think it's got real potential.