The official source has to comply with ICAO Standards & Recommended Practice. You are welcome to use (and pay for) an alternative if it is not to your taste.
The ICAO NOTAM system does not at present have the capability of transmitting graphical information. You may not like that but that's the way it is. You can fulminate to your heart's content but the UK does not have the competence to unilaterally alter ICAO standards.