In future the functional could be re-optimized using the VV10 non-local correlation instead of D3(BJ) as this has been shown to offer great improvement for the standard hybrid ωB97X-V (compared to ωB97X21-D3(BJ)). In addition, following on from ωB97X-V the survival of the fittest strategy has also been used to optimize functionals with meta-GGA contributions such as ωB97M-V and the double hybrid ωB97M(2) -this could be added to a UW12 hybrid to further increase accuracy. In addition, while we have neglected samespin UW12 contributions in this paper, a same-spin UW12 geminal could be optimized in a similar way to the opposite-spin UW12 with a separate geminal function for each spin pairing.