Quick replies :
4 holer : the ref is in ICAO RVSM trial procedures for NAT . It allows pilots to offset 2 NM to the right without having to advise ATC . But only valid in that airspace for the RVSM levels currently used (not all yet )
Moody : The Free Route Airpace Concept (FRAC) will be initially limited to 8 States ( Scandinavia + Benelux + Germany ) so definitively not in NAT and above FL 285 or 295. No data link in FRAC, only todays avionics . Feasibility depends on large scale simulations to be held in Bretigny (F) next year. Basically is to officialise in daytime what we already do during night.
410 : keep the faith..