We all know MTH makes European prototypes. I prefer my engines without pantographs because I don't have catenary. A diesel would be nice. And a GM/EMD/NOHAB would be interesting because;
A: It's EMD
B; Many countries in Europe used them, and now they are being bought by private contractors so modern freight cars and paint schemes would be correct.
C: Well, a couple had American paint schemes which may interest American buyers to use on their US themed layouts.