When C++ Plugin will be accepted on Marketplace. I’m sure Epic is working on it.
A pseudo, third post.
I already try to blend a dirt road with an asphalt road, with a “cross” with 2 outputs, because crosses are static mesh i could paint on vertex to make a blend by hand, it works great, but it’s by hand. And if you want a custom blend, you need to make it in the blend material of the cross. To have this inside the plugin, it depends on the evolution, i don’t know how to design this yet. Be aware there is a huge amount of code behind, but it is an interesting proposition.
A big thank you for this support 