[Eu/Fe] vs [Fe/H] (left panel) and [Eu/Mg] vs [Fe/H] (right panel) for the MW models with increased prompt sources (MRD-SNe and/or collapsars) production at low metallicity. Solid lines represent evolutionary tracks for models with Eu enrichment setup as the best model for Local Group dwarfs, while dashed lines models for which the MW galaxy has a metallicity threshold Z corresponding to the [Fe/H]_thresh as computed for Local Group dwarfs. For comparison, the model with standard Eu enrichment setup is also shown (dotted lines). Data legend is as in Figs. 5 and 12.