I think the important thing is that you are all on the same page. In other words don't put out an advert/word of mouth for "band members wanted" which implies (not just in my opinion, but from discussions with others) that you want someone to be part of the creative process, and to contribute to that process. When in fact you mean "I have my own ideas and sound, and I want a bit of backing for it". Okay, inevitably your style and flair will come through to some extent playing for the latter setup, but if your opinion on arrangement, set up, bookings etc. is not wanted I think that needs to be clear from the start? Then no one can complain.

A lack of candour at the start can have a lot of negative impact down the line. I was in a really very good band formed from scratch where we all agreed equal input and effort, we would all sort gigs and the website etc. But two years in, the only one who was bringing in work, the only one making sure we set up practice times and the only one sorting the website (even though our fiddle player was in web design) and IT wise I am pondlife. Two of the guys even used to whinge on about how they needed the gig money, but still zero effort. So I walked and it still rankles me! As you can probably tell :)

So in short, either is okay, as long as everyone is clear what is happening from the start. I personally wouldn't join a Mussolini type set up (assuming I knew) as to me being in a band is a collaborative thing.