I have no idea how hard it would be to do this, but it would be cool if the long mission chains had a "percent completed" amount right next to it. I'm working on the Drannik now and it just gets so lonely floating in the middle of nowhere, with no idea of how far I have to go.

Sure, I can go to the Wiki, and add it all up myself. But this would be much more convenient.

some mission chains like taltherian require 400k nrg....
which means you will only see a % increase every 4k nrg you spend...
for some people, it'll just bum them out and they'll quit
that's probably one reason to keep it how it is...
you'll feel like you've accomplished something at the end of each mission

Haha, true.

A leader in my legion power leveled through the Taltherian mission chain. I'm thinking of doing that myself sometime after rank 600.