Smart is not the 3rd in a big 3 the way Ray Allen was. That shouldn't even be something to debate. But Smart is an important player on the team. There was plenty of talk that Smart wasn't a PG and all that. Plenty of people were saying we needed a score first type of PG. That is the main point. Smart is fine as a PG. And this season has settled into that role even more.
I am not sure that I would say Smart has taken a "leap" this season though. I think he is doing what he has always done, just a maybe a little more focused. Shot selection seems better but he can still score when he needs to. It seems he is going to the post up a little more. Last season he took 10.1 fga/gm, this season he is 9.6 fga/gm. FG% 41.8% last season, 42.3% this season. 3p% 33.1% last season, 33.7% this season. TOs not changed, rebounds a little down. Assists are up, 5.9 to 7.4. And still doing all the other non-box score things that he always does.
With Smart as the PG, he is not a pure shooter, so that does mean that we need to make sure that we have enough other shooters on the floor. RWill is not a shooter but Horford and Grant are. Brogdon and White have been shooting well for the most part. This is why Gallinari would have been such a nice fit. So Marcus is not perfect, he has his flaws and limitations, he is not a big 3, but I remain very much a Smart guy.