In expert analysis, the young playmaker has shown that he merits the starting position as England's number ten against New Zealand on Saturday.
Fin Smith delivered without doubt the most impressive defensive performance observed from an England fly-half in several years.
How he fronted up through regularly completing his tackles versus a physical Fijian team stood out remarkably.
His tactical control proved exceptional - he showed an excellent balance of skill and composure, and made some strong choices during moments were not going as expected during the opening period.
His ability to calm the team tactically and make important decisions is something he has really mastered.
From my perspective, Fin Smith is England's primary fly-half and deserves to start versus the All Blacks this weekend.
I think the manager the England coach sees it that way as well, because Fin has proven his capability during important Test matches.
George Ford started last Saturday versus the Wallabies due to captaincy reasons, with some aspect of that decision was to provide continuity and reward his form from the tour of Argentina.
But England's showing versus the Pacific Islanders represented a marked step up from the performance against Australia.
Australia were defeated in Italy on Saturday, therefore we must not get overly excited with that win, which should have been by a larger margin given how below par Australia performed.
Fiji, on the other hand, were much more threatening while offering a far tougher challenge.
Fin Smith is still only 23 - looking ahead 24 months, with Ford challenging him while providing backup, I believe Smith will find himself in a very strong position in his career.
Marcus Smith must also be regarded as a possibility when appropriate and against suitable opponents.
He is developing in his career and is starting to find his feet, but he also needs the freedom to show his unique attributes.
New Zealand brought on Damian McKenzie, who scored the match-winning try defeating Scotland, and that shows the importance of possessing players who can make genuine influence from the bench.
That kind of presence can be the difference between winning a World Cup or not.
McKenzie observes the game develop while substituted while considering regarding ways he can make a difference when he comes on.
His choices and mistake frequency have enhanced significantly since his early professional days.
If we can get Marcus to be that kind of impactful player, including him among substitutes might prove valuable.
However, at the moment I don't think he represents the solution at full-back, making it a position that is still unclaimed.
New Zealand will kick testing England's backfield, therefore it must to be impenetrable.
It is a position requiring to become a real strength, in defense and in terms of the counter-attack threat.
Right now, I believe Smith is a full-back at the highest level.
I struggle to see the advantage fielding him in that position.
I want the ball in his hands as much as possible, though I think this should occur in the front line, particularly in the final 20 minutes.
There are obviously a lot of parallels comparing Ford with Smith.
Smith possesses the capacity executing right choices under pressure - his natural reactions are not something you can really taught.
I recall as he received possession at one stage just inside his territory appearing like it could be should they spread play.
But in those milliseconds he calculated the team required reversing the opposition as we are up on the scoreboard, therefore he punted it to pin the opponents and turn pressure.
This represents the type of playmaking securing championships while claiming World Cups.
He also has composure during intensity directing the players nearby, while recognizing that he mustn't constantly serve to be the first receiver.
I hope to witness him given the opportunity to show that at the highest level next week, similar to the veteran accomplish, particularly during domestic matches repeatedly consistently.
In Argentina, Ford similarly excelled in difficult circumstances, previously one might suggest occasions existed where he didn't fully delivered in the very highest-pressure matches.
I believe we have playmaking options who can do the role, but with Fin's defensive work on top of everything else, it makes him the more complete all-round player.
It also means there's no need to adjust the defensive structure when you have an assertive player in the fly-half position, instead of someone who is somewhat reserved.
One might present compelling arguments favoring Ford beginning with Smith entering from the bench.
Numerous factors occurring behind closed doors, however the coaches choose to proceed, it will give the opponents problems.
That has not always been the narrative against the All Blacks, where the focus concentrated solely on selecting the optimal individual.
This time, whichever fly-half selected can put the All Blacks significantly.
Smith's capacity selecting optimal kicks while delivering enabling possible territorial gains might relieve all the stress away from England.
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