Passive infusion seems like a very neat mechanic and a good way of linking territory ownership to actual behaviour and playing the game. It's a massive step forward from the clunky maintenance faction benefit thing of the Nexus War I remember in the distant past. The awkwardness is that since active infusion is still a thing, an extremely boring thing but a thing, it has to be outweighable by dedicated active infusion leading to what sounds like the immensely tedious results of arena 1 where people successfully optimised the fun out of the game. Removing active infusion then lets passive infusion be a measure of control/activity since xp gain is a thing that a general eye wants to be kept on for balance reasons anyway.
Any thoughts along this line are almost certainly too big a change for the next breath but possibly something to sit in the back of people's minds for future.
Either the active infusion skills would want to be completely removed or just replaced with skills that increase your passive infusion (possibly at a cost) whilst doing particular activities (angels or demons I could easily see that being any xp granting activity that also moved their morality the correct way, wouldn't think you would want to tie transcended to NC morality of moving towards neutrality though).
Greater infusion could then be a skill for moving infusion around rather than generating it more efficiently so you absorb aligned infusion from your current tile at a cost and then get to deliver it to your current tile at a later point without generating any extra infusion along the way (other than if this is an XP granting activity). Alternatively that could be the basic infusion skill and some additional perks could replace greater infusion as a concept along the lines of what I was suggesting for the basic infusion skills.
I'm sure there's going to be someone looking at this who loves active infusion as a mechanic and they can give an idea of what we would be missing with it removed but at the moment I feel like so long as there was an infusion moving skill I am failing to see the great loss.