Alright caught up to the First (or is it second?) Region. Interesting direction, this domination of tyrants seems like an interesting direction to go. The soul forging may look like there's player agency at the start but it really just forces you to go train the aspects till you can do 100% of the expression.
I know this entire region is a WIP and will be polished much later when Act I is in a good shape enough to allow Act II development, but I'll make some comments for the eventual polishing.
The complete activity stop when training an aspect or filtering miasma unless you press stop goes against the user experience from Act I. My two cents would suggest changing it to allow user choice of action freedom by pressing another action or lock that ability behind a trinket or certain miasma tier with some lore that once you channel miasma you can't do another action unless you take the time to stop etc.
This also goes for exploring paths like the complete lock and inability to do anything is kinda jarring. I'd also like for the challenging fights to follow some system similar to willowbrook and wildernesses as its hard to grind them out when you have to manually fight people.
Great start to Act II though, very vested in where the story takes us. For now though, I will refrain since I have to go complete Act I and leave nothing.