You're totally right. This deck must me more control in the beginning of the game. That's why we have so many early removals. This part of the deck is perfect.
I only use
Bearer of Silence paying its ability cost. So it's more a removal than an early creature. Goes well when Kalitas in already on the battlefield.
Eldrazi Mimic is a huge doubt for me. Sometimes its super effective (copying Reallity Smasher with no creatures blocking). But it's also a terrible draw in the late game. So I really don't know.
I used to have a full set of
Transgress the Mind. It's an awesome card. But it's not rare to buy it on the late game when my opponent has no cards in hand. And that's weird. So I'm trying 3 now, with 1 on the side board. I think it's ok. I'm becoming less dependent of hand disruption.
Tell me more about
Essence Depleter. How do you use it? Is it worth?
Liliana it's a great card for sure. But I don't know how it would be on this deck. I don't see it going planeswalker so easily. Opponents will use theirs removals on Liliana instead of using it on
Thought-Knot Seer, for example. It's good, of course. But I don't know if it's worth. If you test this please tell me about your results.