How might Snowball have run things if he had gotten rid of Napoleon?Would things have been more benefitable or worse? Are there any indications...

To me, the only indications seem to show that Snowball would have been at least somwhat better than Napoleon if he had been who became leader of Animal Farm.

First of all, I think we can see this because Napoleon is the one who is shown doing the "bad" stuff, even before he expels Snowball.  Napoleon is the one who takes the milk for the pigs.  Napoleon is the one who takes the 9 puppies and trains them to be his enforcers.  Snowball does not do anything like this.

Second, Snowball seems to work hard for the sake of the farm.  He is constantly reading and trying to figure out ways to improve things (windmill, learning how to run a  battle).  This seems to show that he is more interested in actually helping the animals more than he is interested in getting power.