I really hate that I receive less burning marks than I spend when I draw tokens for maxed immortals. Personally, I think you should remove maxed immortals from my token pull. There are so many immortals it will be impossible to ever max them all.
I have a suggestion to improve this situation. Instead of short changing burning marks have maxed immortal tokens be converted to “Null” immortal tokens. “Null” tokens would then work like white pet food does for pets, ie requiring twice as many tokens as the specific one to level an immortal (of your choice).
Lastly, Epic Chests are expensive and all I seem to draw are the featured immortal. If I want to level a specific immortal that’s not featured it’s impossible. For the premium cost of epic chests I should have better odds at leveling a specific immortal. My suggestion is to rotate the 4 immortals of the week through the 4 slots daily, so other immortals will get the drop chance that only benefits the featured immortal now.