Doing a search on "free roleplaying game" on Google results in no results that point to PlaneShift. Any articles that do describe PlaneShift are way out of date. Many forum posts that come up when digging for PS information are woefully outdated and often negative.
Before anything will start to happen, there needs to be new and current information and perspectives about the game posted wherever possible. New conversations, new articles, and things that highlight the benefits that will get people interested enough to try it out.
The tutorial will not put everyone off, though probably 7 out of 10 at least. Considering that roleplay is rather a specialized niche with players, I would knock off 2 for that. This is probably being a bit pessimistic, or optimistic depending on your point of view, but I would say that to retain 10 players in the short term, 100 players need to join, at least.
If the number of people who are registering and trying the game can be driven up, then there should be a corresponding retention of new players, even if the retention rate is very low. But keeping the 10 that do stick around for more than a couple of hours or days is a serious challenge. It is only partially due to client and tutorial considerations. Many people are willing to overlook these things, or at least suffer them.
The other part has to do with the community, how people behave to one another in game, and how they use roleplay (whatever that means to them) to interact with others. I have seen players leverage their roleplay in an OOC manner to threaten other players and bully them, I have seen people attack each other OOC over the assumed "quality" of their roleplay, I have seen people intentionally throw off other people's RP due to OOC reasons.
I am not going to debate any points or name names. I have been in here a long time and I have seen it all in this game. PlaneShift players need to act better to one another and foster a more positive community. Roleplay in PS too often becomes an OOC pissing match that boils over into guild, alliance and gossip and stresses everyone else out. Until it is fun, nobody is going to stick around for it.