I like this +Ingress
but what would be really good is some kind of extra ability for reaching the maximum achievement levels, like:
Builder: can deploy extra lv8 resonator
Connector: can link twice as far
Mind Controller: gets double MU count for fields
Guardian: recharging costs half the XM
Purifier: firing xmps costs less XM or bursters have increased range
Hacker: reduced cooldown time
Seer: priority portal submission review
Explorer: wider action radius
This could lead to specialisations if you can only pick one from the badges you have unlocked.
Just an idea...