I don't want to sound like I'm being difficult. I'm simply trying to make sure I "understand" you correctly...
What does the chain manipulation may not requiring a mandatory upgrade have to do with the question that was asked?
"However, potential solutions to mitigate chain manipulation from attacks is being worked on and may not require a mandatory upgrade"
This line is taken from this text:
https://blog.zencash.com/mandatory-upgrade-zen-2-0-14-super-nodes/This is related to petencinal changes as our answer on 51% attack, first actions maybe won't need hard fork for implementation..
But lets focus now on this fork, and implementation of Super Nodes. I think that nobody wants disastrous forks as result of rushing to get some changes implemented without testing. We need some time to get feedbacks from newely created platform, then we can move on..