Will Mark of Tzeentch be looked at? Considering Tzeentch is the god of sorcery, it's pretty silly that the mark is so unusable for Aspiring Sorcerers.
Even though we aren‘t following the Tabletop 100%, a +1 invulnerability save seems less lore flavored than the double armor regeneration rate, halving the time before regeneration kicks in, at the cost of 15% health.
We‘re always "looking" at things. A big part of our day goes into reviewing feedback, looking at live data from the server clusters, monitoring trends and the results of what we‘ve changed.
That means we might draw conclusions and change it later as part of all the general balancing but, this, like most other specific mentions will have to wait to see if it hits UAT with love or not.