I am not usually fond of these sorts of maps, but I hate seeing threads where no-one replies, so I gave it a go. I must say, it does need some work. -However- it is clear that you have just started it, so that is not a problem. I would say though, if you wish for people to become interested in this map, first of all you need to explain in a clear way the ideas for the map, the objective of it and just generally give information about it. If you do not post an interesting thread, no matter how good an idea and mod, it will struggle to get interest from other modders and gamers.
Another suggestion would be to drastically cut down the number of players from 12 to 2, and also cut down on the map size and give the map some terraining. Though this may seem strange, aiming at getting the game working for just two players means you can easily balance test it and then expand the map eventually to incorporate many more players. Also, get a well worked out tech tree ready, do not aim for too many units at the beginning as more can be added later on.
I will admit that this map is not to my general tastes, but it does have some potential. There are a few things I would suggest for the map so far:
1) Cut down on building health, it is currently excessively high.
2) Place the units in weakness order in the Factory, it may seem like a strange suggestion, but it always makes sense for the weakest unit to be in the top left of the buildings interface.
3) When the towers fire, any idle tanks turn to chase after the missiles that fly by. That will need looking in to.
Anyway, I wish you luck with this, keep your spirits up, even if few people respond.