Just a thought. If the calculations are correct and the engines are working as advertised then the aircraft should accelerate at a certain rate. Would it not be possible for the FMS to provide the crew with a time to say 80 kts based on what they have entered. Start the stopwatch at breaks release and if there is a significant discrepancy then the take off can be aborted rather than have an 'oh sh@t!' moment after V1.
Whilst there are many that believe rules of thumb should be enough I think that the combination of significantly different: loads, fuel, ambient conditions, and runway lengths that exist for long haul ops combined with the comparitively small numbers of take offs per month per pilot, means it is unrealistic for the crews to detect an error based on the 'vibe and the Mabo'. As was mentioned above, once can be put down to pilot error, but this seems to be happening regularly enough to consider it a systemic problem.