I totally get your thought that it is no longer 2005, and people will do what is important today, however, your numbers are way off. So, the idea that a new hire would be better off staying on LOA93 for the next 15 years, over a Nic inclusive contract is plain stupid.
The only difference between today and the 2 year number from 2005, is that likely many West junior pilots (100 or so) have left to never return, and there has been a few years of out of seniority upgrades.
So, for the east pilot who just upgraded, they did not have the 2 year penalty, but if Nic were implemented today, the east pilot one junior to that would get like a 4 year wai, while the West pilot who already incured their penalty, upgrade.
Seriously, if I were a newhire, and my choices were, upgrade in 7-8 years, and work on LOA93 for most of my career, or use the Nic, complete the merger, upgrade in 9-10 years and make 20% more starting today, and much more in the future, I would be a complete idiot if I chose LOA93.