MY muse favours this one. Of course, then I have this mental image that she gets an upgrade to a mech body and becomes Ultra Magnus.
Perhaps. Ultra Magnus didn't appear until the movie; AFTER the femmes showed up in "Search for Alpha Trion". So it could work.
And you should like this at least a little; you were the one to inspire it. (Unless I am mixing up people's DA usernames again...)

My of my muses got commenting on this, specifically my Divinus muse, who is an ex-Prime, and a Servant of Primus and is also the Autobot Perceptor, but he is secretly working with another ex-Prime Servant, Audius... who is also known as Soundwave.
*intrgued*

So if someone found out Perceptor is regularly working with Soundwave... it could be the proverbial nail in the coffin for someone trying to brand him a traitor, when he's not, because he and Soundwave are working together to see that niether side are a danger to Cybertron... and to their lord, Primus.
Yes! See? It still works out wonderfully!

I don't think there is any issue of incest in such a situation - it's perfectly legal for two brothers to marry two sisters IRL. Now whether the various brothers involved would be approving of Moonracer and Firestar being together is another thing.
Incest is in the eye of the beholder, really. There are some who believe that since stepsiblings aren't technically related, it should be fine. As someone who HAS stepsiblings, I don't see that at ALL...

I'm sure Inferno would be fine with it, and he could probably convince Red. The twins, however, are a whole nother story...

As long as it's not Magnus. Or Optimus.
Originally, in my head, it was either Cyclonus or Soundwave. But it could work with pretty much anyone.

I want to see it. Especially the reaction of the G1 'Bots to the Allspark Key.
Assuming it still works in a universe with no allspark. Regardless, it would be quite interesting.