Will the rollback executed fairly! ?

I understand the point you are making about flat compensations. This will reward more than the effort put in for some. However, I cannot see a fairer solution than just rolling back and giving some crystals as a sorry for the disruption, rather than further touching datacrons. It depends on how fast they turn around; so far, it was just the experience of seeing them dusted. We may be impacted for one TW (every guild equally), but GAC is starting its first attack today and is locked in, so there is considerable time before GAC is impacted. But when discussing this, some argued that those who do not invest in DC's likely will still not even with this compensation. The flat compensations are also much quicker to implement and I expect (or hope) this to be a one-time issue. Whether anyone who used considerable resources or money still feels it has provided no value after the mess up and wishes to request refunds, that is up to them, I used some crystals but success is so RNG-dependant it really is hard to say whether anyone will benefit more or less in my opinion.