Crazier part is that the showrunners admit they're making it up as they go along.
Breaking Bad had a good amount of seasons, which I hope they replicate. But seeing as how we are in the second season of this show and he still isn't Saul I'm worried that they will drag it out too long.
I don't wish to ruin it for you, but I also don't want them making the show any longer than it needs to be.
I think what makes both shows work is that even though they're slow, there's still the sense of progress. Even when Breaking Bad was doing its slower episodes, they were revealing something new about the characters, or moving the pieces around so that future huge changes would work within the confines of the plot. I'm perfectly fine with the show taking its time to get to Saul, as long as there's no spinning of the wheels (and Gilligan and company have more than earned my trust at this point). If Jimmy was stuck in the stifling environment of Davis & Main for season after season, then yeah, there'd be reaso to complain, but they're very obviously setting up a plotline where he's most likely not going to be there by the end of the season.
For me, I'm perfectly fine with the showrunners making things up on the fly as long as it's not the kind of thing where there's a big mystery that's established and they've got no idea how to resolve it (apparently Lost was notorious for this).
what do you want to see after he turns? A weekly procedural? This long, slow turn is the entire point of the show. He was Saul all along. We might not see him change his name until the last episode of the last season of the show. I'd get used to it.
It all depends on how they set things up, of course, but my own personal gut feeling at this point is that the Saul Goodman practice was actually a legitimate thing to start with. Jimmy wants to practice law "his way", commercials and all, so after striking out from Davis and Main, he could use the decent amount of money he's still due for bringing the Sandpiper case to HHM in the first place to start his own practice in a location that's not a nail salon. He already knows that his style of commercial works, and we've never seen him happier than when he was busting his ass doing all the public defender work in "Mijo".
Remember that the Saul we see in Breaking Bad isn't just a lawyer working on his own, but he's a "criminal" lawyer. He's more than willing to help Walt out with his drug business, suggests murdering Badger in prison, and has been involved in some sort of shady business with Nacho that suggests that he's not entirely surprised when he thinks that the cartel's trying to kill him.
There's still a LONG way to go from the Jimmy we see here to that version of Saul.