ICAO hasn't been able to complete the SARPS for GADDS, more than 7 years after the disappearance of MH370. There's no chance that any simplification rather than further complex-ification of the NOTAM system will happen before hell freezes over.
Imagine how much busy-work 'safety' is created by people surveying shrubs and other flora, the results of which surveys require an amendment to the approach gradient to a runway and the promulgation of corresponding NOTAM because of flora with tops at 4' AGL. Presumably more amendments and corresponding NOTAMs will be required, as the shrub does what shrubs tend to do?