He could be, but I think Fisher is a bridge coach.
Don't get me wrong, I love him and I think he can lead us to a championship. However, I've said it before, I see this team the same way I saw the Kings back in about 2008/2009. A very young team with lots of potential, that needs time to grow and learn how to win. Their coach, Terry Murray was perfect for teaching young players how to adjust to the game and learn how to play strong defense with solid fundamentals. After a few years he got them into the playoffs, where they won 2 games and were bounced from the first round two years in a row. Then half way through the following season (after their second time being eliminated) Murray was replaced by a much more aggressive coach. Although he still preached defense, he also told them to go out and attack, get the puck and keep it. Now they have two cups in three years, three consecutive conference finals trips, and are considered one of the best (and best ran) teams in the league.
I think the Rams will show continued improvement, I think we'd be further along if not for injuries as well, but this team has the talent to make some noise. If Fisher is unable to do it, my guess is the next coach we get does. I'm willing to give Fisher the end of his contract (assuming we don't just start to tank and tank hard), but if there's no real promising replacement out there, I'm not really in favor of change just for the sake of change.
At any rate, he's better than Harblow, and I'm not convinced on Pete the Cheat either (mostly because you know most of that defense is juicing, and given that they blatantly bragged about their cheating you know he encourages it), but the Cardinals may have gotten themselves a real quality guy.