We bought 5, we looked at 5, we went back to and stayed on 4.
We have been playing for... a while; but the vast majority of our games have been fantasy with well established and comfortable rules of what our GM likes and to the best of my knowledge nobody in our group has ever used multiform. However we are taking a walk on the wild side with a new campaign and using a couple of the heretofore discouraged/banned/inefficient powers and since no one had used multiform I ran with it, which led me to this site and this page.
As far as using Multiform to change into your superhero ID, that is not how I picture that character to be created at all; I would build my powers and use the hell out of the Only In Hero ID disad. I consider Multiform to be: Jeckyl and Hyde/ Banner and Hulk/ Maybe a werewolf though there are other ways to build that... etc
Antique?? It's in its prime. Though it is definitely falling apart.
While we're at it, I will throw in my question which led me here and I believe I know the answer to, but thought I would bounce it off other peeps: let's just say my multiform has charges that last an hour, can I multiform back to prime character before the hour is up?