I think these new proposals are great.
At KEF last weekend they tried to call CE/GHC/OWE first but there were so many pax clogging up a very small waiting area, it was hard to get through.
New lanes will definitely help. The problem at the moment is one single priority lane with loads of silver and bronzes getting in line early and getting annoyed when you try to get past as Gold.
Ive seen the current boarding procedures enforced well at AMS and KEF, but diabolically at LHR, MAN and DUB recently.
I really hope this new new method works. If it’s similar to AA it will.