Does something like this seems good enough?
Base.:+{N}(a::NTuple{N}, b::NTuple{N}) = ntuple(i -> a[i] + b[i], N)there is also map(+, a, b) where `a`, and `b` are the tuples you want to sum elementwise. There is a chance that eventually one will be able to also use broadcast or elementwise addition .+ for doing this.
