We would need to be very “serious” about it, and it would be complicated.
In France we have a few groups (“collectives”) who do this, for example Mètis did this on 15 sorghums last year. But they have credentials, working with farmers and bakers, and some are past researchers. They are also implied in the “semences paysannes network” which is all about promoting seed… “for the people”.
After the gmo struggle around 2000 this network was created, still existing but there is less and less citizen awareness of those issues: for the 20th anniversary, we were only 100, all looking for a second wind. Maybe through new approaches like landrace gardening / adaptation agriculture… We never know…
Anyhow, I will talk to them about their relationships with seedbanks, advantages and drawback they see.
Seed laws are very restrictive in the EU, so any newly created landrace cannot be sold for professionnals, and if you sell on the internet to gardeners, you need to comply with “phytosanitory requirements”, which you can’t afford…
That is one reason why you don’t find small breeders in Europe: it is all about multiplication and conservation, in situ at best (i.e. versus ex situ: in seedbank fridges). “Old varieties versus hybrids” to summarize the choice.
That is why my strategy is more about working with amateurs, or with farmers collectives (like Mètis) who can swap seeds to some extent and do things like making mixtures for direct use (ex: bread wheat mixtures for farmers doing bakery, or at least milling).
I need to check what the drawbacks of getting accessions are: for my cereals I remember I have to send INRAE my communications about what I do with these…I have to be more precise about the scope of this obligation, and be sure that we have the right to do some breeding work starting from accessions…