There's no doubt in my mind that Firmino's position is one in which we can improve the most on in terms of points next season.
Playing Firmino against Burnley is like playing two Lucas and Stewart against the same. Against the good teams, you can add a lot of value with a Firmino to buzz around and keep defenders on their toes.
Against the more defensive teams though, you need more firepower than what he offers. He's just not a good finisher. Frankly I wouldn't be surprised if he got a similar return next season playing half as many games as he does now, if he only played the right games.
I remember a couple of seasons ago, there was a discussion here about whether you could learn to become a great finisher. The players being discussed were C. Ronaldo and Sterling, and the argument was maybe Sterling could do what Ronaldo did, by applying himself off the pitch and becoming a great finisher, although he is not a natural.
Firmino is a natural at a lot of things - he's got great skill and he's naturally the type that runs all day. He said this himself in an interview that praised his hard work on the pitch. But I haven't stories about him staying back a couple of hours working on his finishing, the way we used to hear stories about Ronaldo and I think at one point Suarez as well, regarding their set pieces.
So I think he's got real ability and naturally loves to be involved, but I don't know if he's got the passion to perfect his game, as some others do. That's what he needs to do. People erroneously used to compare him to Suarez quite a lot, sometimes noting that Suarez didn't score a million goals in his first season and a half. But Suarez learned and improved. Will Firmino do that? Or will he be another one of the crowded ranks of 7/10 players with unfulfilled potential that's described the majority of our squad for the last 10 years?