Another vote for a programmable open firmware. This should allow for community - driven improvements and fine tuning of things like variable overdrive, strobing, UI etc and introduction of new features over time.
This will put it a definite step above any other monitor on the market with which you’re stuck with whatever half hearted firmware and bugs you got when you paid for it for the entire life of the monitor.
The only thing, as others have said, is to build in a fail safe in the event of a corrupted or non working firmware or failed flash.
Monitors are such a long term purchase, potentially outlasting any other component of the system, making something like this even more important, assuming the rest of the specs are decent enough (which currently sounds like they are - depending on the price).