I think I understand your intention, Martin. In principle I agree. But when I read of the measures already in place to back up and in the event of a complete meltdown of the hosting services systems and perhaps their viability, the ability to restore services in a reasonable time all seem to be well catered for, especially for a free service!
Having a linked system with a common reference for summit validation does expose the sotawatch/sotadata combination to potential outages in the event of the common database being unavailable. But that was put in place to remove the conflicts between two summit reference tables being independently maintained, which irritated some users occasionally and created more work for the MT. One instance of common reference data is a smarter solution.
It very rarely fails like it did recently.
Perhaps each activator needs to consider how they would operate, alert potential contacts etc in the event of sotawatch being unavailable. Be prepared. Each operator could and should have alternative arrangements.
At the very least, there are the reflector and the mailing lists that exist for every population centre - I know of several in VK and the North American mailing group. I’m sure there are country-specific lists all over the world. [edit: I forgot to mention the forgettable facebook groups - another option]
If all else fails, the activator may be face with an activation that struggles to achieve the 4 contacts required in the usual way (operate on alerted or spotted frequency, sit back and wait for the contacts to come to you). Gadzooks! Does this mean an activator might have to answer ordinary cqs and make ordinary contacts! Yes! (warning: also may require use of tuning knob on radio, considering other bands, calling cq a bit more yourself, having more than one mode option available).
Then there’s the burning issue of uploading the logs. Relax, guys, they can wait. The points will come. You will get your awards.
All up I think SOTA is eminently sustainable and well supported.
Thanks to the MT and especially the IT group…