Here we make two key steps towards using MRF, a model inspired by the strongly interacting limit of DFT, for the construction of robust exchange-correlation (XC) functionals that contain full spatial nonlocality. The first step is on the theory side, where we showed how the MRF model can be made exact for the uniform electron gas, and how it should behave under the uniform density scaling. We then used these insights to construct improved fluctuation functions (a parametric object that determines the MRF functional). The second step is on the practical side, where we showed how the MRF functional can be implemented into standard (Gaussian basis set) quantum chemistry codes.