I have never said that the ADSB should be used by the class D tower controllers
Totally the opposite. The airspace when IMC exists should be the responsibility of the centre controller with the survailence rating and the equipment .
That's how it works in leading aviation countries
Total rubbish about needing multiple stations. In many parts of Australia in the high level enroute airspace just one ADSB station at a time provides the full service
There is only one rotating radar head in Canberra. If it goes down there are procedures to cope. Same with ADSB