Currently, MPcules accepts only DFT calculations from Q-Chem. This means that we are presently excluding calculations using high-quality wavefunction methods based on e.g. coupled-cluster theory and multireference methods, which might be useful for benchmarking electronic structure methods or for ∆-machine learning of electronic energy and other molecular properties. At the same time, we exclude calculations based on semiempirical quantum chemistry methods such as self-consistent extended tight-binding (e.g. GFN2-xTB), which have become increasingly popular for generating large datasets of molecules at low computational cost. Even within the narrower realm of DFT, the restriction to using a single electronic structure code could limit the ease with which users can contribute data to MPcules.