Kickstarter? I don’t know… First problem is to find UE4 developer with knowledge of the engine on C++ level, knowledge of Blender and Blender Python API and IO API, get him/her interested and see what the cost would be. Maybe it can go to Marketplace too, to offset initial cost of development. Once all that in place - might do Kickstarter or whatever platform is as feasible. Hell, maybe Epic can fund it.