I have not been involved in this project at all.(Skywind) I have been following it very often and I wanted to finally start working on it and giving my input.
with that said here it is...
I know Morrowind never had marriage or "Amulet of Mara" but I have been thinking about this for a while and what if there was a way we could use an NPC at or outside of "The Tribunal Temple" that could give you an Amulet that would let you marry much the same way you do in Skyrim? (I have been starting work on designing such an item I was thinking of this name "Amulet of the lasting bond") but I am not sure if we are going to be adding content in, if we are not I was thinking then that we just make the "Amulet of Unity" act as such an item on top of its long list of stats?
we are giving Morrowind a breath of fresh air with this mod and this is only a very small change that wont effect the very feel of Morrowind we know and love in fact its one of my favorite parts of Skyrim and I ALWAYS had marriage mod when playing Morrowind...so why not implement a marriage system like that of Skyrim?
or we can just import the "Amulet of Mara" if that would work better.

I doubt it. It would probably
I doubt it. It would probably have to be a mod.