When I clicked on this thread, I was expecting a somewhat intelligent discussion, about how Voyager would have been different, with Riker in command. I was... Disappointed. This is downright embarrassing, does this website have moderators, or not?
Anyway, to answer the OP, if Riker would have been in command of Voyager, he would not have gotten along as well with Chakotay, Tuvok, or Tom Paris. I don't think he wouldn't have allowed Kes and Nelix to stay aboard. He wouldn't have made an alliance with the Borg, which means he wouldn't have picked up Seven of Nine. And, without having Kes to throw Voyager beyond Borg space, or Seven to help fight the Borg, Voyager probably wouldn't have made it back.
On the other hand, Riker would have been more likely to use the array to get back home in the first place, possibly condemning the Ocampa to die.