Where can we find our lifetime amount of Imagination?
As we spend it, it would be nice to still have a place to see the lifetime total earned. I know levels aren't supposed to matter so much, I can't help but want to know how close I am to the next one.
I don't think there's currently a way to see lifetime imagination but your level and the iMG to next level is available from the player menu (clicking on your face in game).
I can't help but want to know how close I am to the next one
That's at the top of the Player Menu... Click the face! Click the face!
(and remember that level is based on lifetime iMG, so spending iMG on upgrades doesn't affect you levelling-up)