Hi,
we have been thinking about this for many years already, but it is unfortunatly not so trivial as we have not a few products but SoM with variants and then if we multiply by the carrier board then it would come very bloated and a real nitemare to maintain.
So far we have not found a reasonable way to-do it, we are still concidering possible options and will continue that in the future too.
What we could do is to take over the responsibility for one given SoM+ carrier combination (like the EMC2 case) as of the testing as required, but only if we really have a full setup of the base at our premises.
Antti