Congratulations, but I really have to take issue with the assertion that:
Outstanding films rarely slip entirely under the critical radar
How on earth would you know?
And doesn't half of Second Run's catalogue disprove this assumption?
I completely agree - take pretty much any country (especially one with a strong film culture like Hungary) and you're guaranteed to find dozens of outstanding films that are unknown in the English-speaking world purely due to accidents of distribution (or lack of it).
As demonstrated above, the Hungarians seem to rate Zoltán Fábri above all their better-known directors, yet I'm willing to bet that very very few UK or US-based critics have even heard of him, let alone seen anything with his name on. Same goes for František Vláčil prior to 2007, and even arguably Andrzej Munk - I first heard of Munk when I read Polanski's autobiography in the 1980s (Polanski was his former AD, and clearly revered him both personally and creatively), but it was at least another two decades before I saw any of his films and realised why he was regarded as one of the country's all-time greats.
(Talking of which, I've heard rumours that Second Run may have another go at producing a decent edition of Munk's Eroica
- if you remember, they scrapped their original plans despite announcing a release date after being unable to secure a master that wasn't battered, horrendously contrasty and VHS-quality. A far superior unsubtitled edition has just come out in Poland, so enquiries are being made).