OK, let's analyze a bit this "too much Tamron" idea by looking at the known future lenses.
We have 5 lenses on the D FA roadmap; one is the fish-eye zoom, which is characteristic to Pentax (it would be their 3rd). From the 4 remaining primes:
- a wide-angle single focus lens, the Tamron 35mm f/1.8 might qualify but only if f/1.8 is not enough to call it "large aperture"
- a large aperture single focus lens, there's a Tamron 45mm f/1.8 but only if f/1.8 is enough to call it "large aperture"
- a large aperture medium telephoto single focus lens, there's a Tamron 85mm f/1.8 but only if f/1.8 is enough to call it "large aperture"
- a large aperture ultra wide-angle single focus lens, there's no corresponding Tamron.
I'm optimistic about the chances that these new lenses will
not be Tamrons; partly based on this mismatch, and partly because the "mystery lenses" seen at the CP+ interview don't look like the Tamrons:
https://www.pentaxforums.com/forums/16-pentax-news-rumors/314295-mystery-lens...interview.html