It's a film where the action is driven primarily from the over-the-top performance of Pacino, and much of the conflict looks as though it was borrowed from THE SOPRANOS. The motif of the estranged daughter was probably the most elegant sub-theme in the film, but it didn't justify its 3-hour length. My sense is that the film has 1-2 too many mob execution sequences, and that removing them would've better balanced all of the story elements.
I think Scorsese nailed the tone of the film perfectly, but its execution is too lugubrious and flabby to be a true classic. Based on that, a Top 100 rank since 1967 seems questionable, but a place in the Top 200 for the film's obvious strengths is likely.
As is my wont, I am intrigued by the "wisdom of the commons" as manifested in the review (not the ratings) at IMDB. As we all know, the individuals may be either principled or capricious, fair-minded or malicious, but as a whole (especially where there are enough voters--at least 200 or so), we get some interesting perspectives from these distributions.
I won't belabor the point right now, as it involves more data and discussion than is feasible (and probably advisable) in this context, but films almost always have a lower rating from IMBD reviewers than from voters. THE IRISHMAN was 178,000+ votes (numerical rankings) but only a bit more than 2000 reviews with numerical rankings. This group is (presumably, at least) a level or two up from the standard user/participant, and they tend to be more critical (if not more discriminating).
Some of the comparisons here that might tell us something are just how much lower the reviewers are than the raters. The reviewers' average value is about 89% of the raters' average value. In the case of THE IRISHMAN, reviewers are more critical than average compared to the full voting population--only 83% of the raters' value. (For comparison purposes, a film like PARASITE, with only 611 reviews thus far, pulls a 97% score; on the opposite side of the scale, ONCE UPON A TIME IN HOLLYWOOD scores only at 76%.)
Some of this is undoubtedly a "backlash effect" (films whose detractors are motivated enough to assign a "1" ranking). For films with 400+ review rankings that I've collated, the average "1 Freq" (percentage of "1" ratings) is around 5%. THE IRISHMAN's "1 Freq" is 9.2%; ONCE UPON A TIME is off the charts at just under 17%.
All of that can be adjusted for, of course, but it is interesting to note that these films have very elevated backlash percentages. Speculations as to why this is the case could produce some interesting possible explanations beyond the unpredictable interactions between "principled," "capricious," "fair-minded" and "malicious." Certain films, for certain reasons, may encourage more backlash. Is that because they are great, or because people are responding vehemently against a certain type of hype, or something else?
The other question is whether the backlash phenomenon is becoming more pronounced over time...but that's an entirely different discussion!