Summary: Why add a number pad? I suspect it's on someone's tickbox list of features. A list which only exists to satisfy those obsessed with checking items off lists. Even those who think they need a numpad soon realise they can live without it. Apple know this, and they do a lot of research into user interaction. Somehow I doubt MSI do! Why such a strong opinion?
Pros: it looks ok
Cons: any laptop with a number pad and left of centre touchpad is just BAD