LonMore is right. It isn't the displays that are the problem. There are any number of really good displays out there that outperform NATS equipment (incl NODE).
NAS, Host, HCS or whatever you want to call it is going to be the UK standard for a LONG time yet. Even NERC "piggybacks" on it.(repeat after me... "NAS BEFORE NERC" ten times). The software origally written in the late 1960's for the beloved IBM 9020D lives on!!
Strangely enough the situation is very similiar in the USA. Nice new BIG colour workstations using existing NAS software.... without NERC type electronics(abandonned as too risky)
Where did we go wrong??
Rgds
BEX