The wording we choose to use has an impact here. You've chosen 'renege'; we might just as easily choose 'reconsider', 'revisit' or 'review' - words which would describe the same act by FDev but do not have the negative spin of 'renege'.If FDev chose to renege on their word
I'm not sure it would be all that demonstrable; nor all that negative. As I said in my last section earlier, we can choose one of two viewpoints: that an agreement once reached is eternally binding and cannot be altered even if the parties to it see reason to do so; or that an agreement reached between reasonable people can at any time be reviewed and, if it it agreeable to all involved, changed.Arguably, FDev would be considered as less trustworthy than before this decision was made. (Regardless of how any individual currently views FDev's integrity or trustworthiness - it still goes to a reduced level fro that single individual compared to how they view it right now. Everybody should agree, by definition, that an organisation going against their own word reduces it's trustworthiness to agree by it's own word in future).
Simply speaking the trustworthiness of FDev would take a demonstrable negative hit and be diminished to some degree.
If FDev choose to review this particular decision, then I would expect them to explain their reasons for doing so - but my earlier explanation I think would suffice to settle a lot of potential concerns. Again, it's fine to present 'trustworthiness' as some impervious platonic ideal - but it's equally possible to view blinkered inflexibility in the face of changing circumstances as untrustworthy. How can we trust a company that will not consider a way to benefit large proportion of its players because it made an agreement with a small proportion of players years before?
In short I think true trustworthiness demands that we undertake to keep the lines of communication open and act in good faith - even if doing so means we change a position we once held.