I do see what your saying here and there are some valid points.

But basically......... NO!!!!

I say this for various reasons.

Firstly and foremost in my mind is simply WHY make illegal alliances legal, when you can just go the "alliance" route anyway, why not pick 1 family for an official alliance rather than 3 families for unofficial ones.    In my eyes at least it would be better to simply make alliances legal rather than making illegal alliances legal, if that makes sense.

Secondly I think it would cause a lot of problems in the game, for example.

I random into one family, one of my mates randoms into another, so we illegal alliance every round

Someone else randoms into a family and tries to illegal alliance with the ENTIRE galaxy

A lamer or spammer type gets some power and starts firing off lies, propaganda, false facts

A person randoms into a family (as a spy) and mails every bit of the families info to this real IA family

I don't know does this list really need to go on?   

HOWEVER......  What Legion has said does hold some water, it is true that the game does revolve around diplomacy, can actually be fairly hard work as a leader but can also be fun, so sure the rules perhaps need relaxing.

In the current rules it basically does say its DEATH if you even message another family without a NAP

Thankfully however the MODS do not in force that rule unless and really bad thing or devious IA had happened

I am thankful of this because I message players all the time asking how they are how their round is going what they are playing next round, even just to tell them to "kick ass" in their war and give them hell and so on.

In my eyes at least its nice to chat with other players / other leaders, to talk basic stuff, ask them about their race, discuss how one family is growing to quick or whatever, its good to discuss the "state of play" and just to talk rubbish as well.  Planing some huge IA alliance however is a bit too much in my eyes and would change the game loads.

If I could IA the galaxy what I would do is......

I would message the next two biggest families and would say.

Lets take down the lead family

Then when someone else was leading the round the next 3 down would all message each other and say

Lets take down the top family

And so on.......   

The family who actually won the round would have nothing to do with skill as such it would be more a case of who avoided getting hit, who was on top the day the round ended.    Yes, yes, yes we won that round because the other 3 or 4 families just didn't have time to get to us, were so cool

I also kind of like THE FEAR factor, the not knowing factor, what is that family planning?   Are they going to cancel on us?  What are they building?   Should we hit save? 

If I could IA everyone I'd fire off a message and just ask whatever I liked, kind of kills that mystery for me

I'm all about the 3v1s etc, but would need to have parameters around it.   Aka if a fam is attacked a certain amount of times then war is automatically declared by the game.
If more than one fam declares war on you, your fam gets a morale boost to compensate slightly and have up to 3 fams who can declare war on you at once.   So 3vtop fam would result in top fam having a bit more morale to fight in order to offset and maybe enemies attack bonus declines or something... With the right parameters it could work.

I agree  with Legion

worse case do it in one gal and see what happens

Hell make it an "extra" playable gal so you can be in that and a normal one

Well I'm not against you as such I'd personally just prefer going down the legal alliance route.

Now you're talking, we'll have everyone in one big alliance! And then we can vote people out once a day until we have a winner!