I totally agree.
There's a huge lack of sativa genetic diversity in today's commercial weed.
It's real sad. Sativa grows almost in every place of the planet, but after 3-4 decades, the cannabis breeding scene has a poor sativa legacy, mainly composed by haze hybrids and durbans. The true is that we have hundreds of different commercial 'strains' available but they all have the same sativa genetic background.
I like a lot haze and durban but there are lot other good sativas from Nepal, Vietnam, Cambodia, India, Angola, Congo, Panama etc ... that are excellent in quality but they are a very small part of today's commercial genepool,
Landraces have their own cannabinoid profile and new aromas and experiences to offer. They were the base breeding for all the modern varities we are enjoying today and the future for the new breds too.
We are working in our own way, adding new quality genetics to the commercial genepool instead copy other's work or sell the same sour/nl/skunk/haze/widow/bluberry unstabilized poli hybrids we have been suffering the past 10 years. We are doing what is in our hand to avoid cannabis endogamic depression.