I-FORD:"Late or slow rotation doesn't mean unsafe when you have 1000mt of clearway in front of you"
I think you might find that statement would be disputed by the aircraft manufactures. In fact thay all go out of their way to describe the correct techniques required to realise the required performance profile. What if the take-off is obstacle limited? Still no problem?
Every incident report that I have read where aircraft have been shown to have had "near misses" with respect to performance on take-off have proved to have errors in performance calculations, data entry errors or handling errors. You seem to have a handle on this being a normal take-off and therefore nothing need be investigated?