I have to add just 2 things:
I think the decay time depends on the HP of the buildings and not just the number of buildings connected, for example 1 t3 foundations should have, alone, more decay time than a t1 foundation, I will check that when I have a little time to be 100% sure!
Also (but that is more a suggestion to Funcom than an addition to your guide) I think that the ID of the structures should change when they are divided. Why is that?
- you can destroy more easily the stupid claim landing with foundations spam
- what happens if you connect long buildings and then destroy the connection? you can build a far far away structure and refresh its decay timing without having to go close to it, so you could (in theory) like refresh every build that you have in a huge range. Is that just theory? Maybe, but it means that something’s off with that system