populations size is what me makes think about the most. I am just in the beginning of everything and did only my first small scale hybridisations. That is fine for the start but I know that I need (and want) more seedlings to do selection.
I see 2 main issues in practical work. In the south it would be easier to produce large amount of seedlings but you have to wait for the chance of frost tests. That means you keep more seedlings as you need. (fortunately not my position
)
In the north (like me) it is much more difficult to produce enough seedlings for frost tests. Due to limited space in greenhouse etc. Most seedlings grow very slowly in their 1st season here in our climate. So it is probably better to do frost tests in the 2nd season but that is a matter of space. Small seedlings will be killed for sure whether potentially hardy or not. Too small is too small
So it is even much more unlikely to find a hardy one among the small number of seedlings. To talk about edibility is a whole other thing...
I was thinking about a garden in the south, dreaming of Ventimiglia, Italy were I once lived for a short time, but that is far from reality for me. Theoretically it would make it possible for me to produce a lot of seedlings without to worry about the winter and do large scale frost tests here in the north.
I am still thinking about this possibilty but it only will come in reach in far far future. Now I barely manage to handle my 2nd home and work 160km from here.
Still only spinning around but I keep thinking about that. Especially about how to handle it now...not in future.