Vixen style shorts featuring heroes of Berlantiverse

I had an idea just then. I for one am dying for more cross-overs, but they are very expensive and time consuming to produce. But a nice way to get a cross-over fix now and then could be this Justice League style animated series that comes in occasionally like the CW's Vixen, where in short scenarios Supergirl and The Flash, Arrow and Legends and any future heroes can work together without the fuss of a live action episode. The actors can provide the voice and the rest is much easier work. What do you guys think?