IMHO such as system should be considered with caution.
IIRC a reduced runway occupancy trial was evaluated in Europe (Munich?) resulting in a reduction in safety. The trial did not involve equipment, poor visibility, or have the same objectives; but in raising awareness and the need to exit the runway as soon as possible encourage rushed procedures and fast taxing. There may have been additional hazards in negotiating taxing patterns with early turn offs or having to hold before crossing after a high speed turn off.
The reports from the new system are extremely narrow and may not apply to other operations. Apparently, only non limiting runways were used without variability in braking conditions, - two critical features in Cat 3 (indeed in all operations). It would be foolhardy to state that safety would not be degraded at the same time as reporting on a system which encouraged reduced brake wear and lower auto brake levels; compare what is proposed with today’s balance between economics and safety – the current accident rate.
Some of the hazards of auto brake use have been covered in other threads, but anything which appears to reduce the levels of braking where the industry’s leading cause of accidents (hull loss) is due to overruns might be judged unwise.
However, from the system description there may be benefit in improving awareness of the achieved level of braking – the rate at which marker boards are passed; particularly in low visibility. If so, then this could overcome some problems on low friction surfaces where the anticipated auto brake level is not providing the required deceleration, thus enabling full manual braking at an earlier point – within the margins of safety in the calculated landing distance.
A similar advantage might be seen for operations on limiting length runways by providing awareness of what distance remains to the end of the runway. This type of information is provided by systems such as RAAS, but the new system has the advantage of an airfield installation applicable to all aircraft.
I would prefer to have a system which reduces the risk of an overrun before providing greater airport capacity; necessity before nicety.