The Soundhax entrypoint for all versions ≤11.3 is very easy and fast. No doubt. But where is the problem once B9S is installed? To prevent possible problems with older versions an official update after installing B9S is part of The Guide. On the other side Seedminer is largely automated and not much harder (anymore). Not really a reason for searching consoles on low versions.
I can't say that I'm a fan of premodded systems. The buyer never knows what they get and they do not learn anything (and then they don't know anything about CFW).
Do you know if there is any other way to speed up the process for doing multiple DS’s?