Along with adding the sixth crystal crystal into the model, and team color crystals, I spent an immense amount of time writing a computer program to generate this model from the standard portal by rotating it's internal animation data to face a different direction so that it is truly an upward facing portal, not just a portal which had it's root bone rotated or something. So, it seems a little bit like subtley large edits, but I can see where you're coming from.
Considering these edits are small to you, I'm actually curious, do you have modeling software that could rotate a rigged wc3 model with it's animations to face a different direction? It might be worth it for me to investigate more existing alternatives to writing my own code.