X Positive Art Assets - Please make it mandatory on all Marketplace

Hopefully this simple drawing will get my point across. But basically, why am I paying for art assets that I then have to go into a DCC to rotate the darn thing and reimport (or Import Rotation-> Re-import)?

Why is this step even necessary for any Unreal Marketplace Customer? Place the burden on the MP sellers. UE4 is X+ Forward, all art assets that should be facing forward (like gun barrels…) and their parts should be facing X+.