Well.. MK11 has a lot of "Baustellen" (Building sites). So a lot of things NRS has to care for. The big problem in ToT is the balance and the randomness. First, there is no balance. Some towers are a pain in the ass with modifiers you just can't beat (even the AI can't finish those). Then it has nothing to do with skill because it is depending on luck.
What could be a solution?
1. make modifier like draining life or take damage if you use special a lot weaker
2. make some modifier blockable (like rockets), which they wanna patch at least
3. give us the choice which difficult we want. If we pick very easy then give us less reward. For example:
reward tower island: skin, brutality for xy
reward single tower at medium difficulty: 300 souls, 120 blood
reward single tower at very easy difficulty: 100 souls, 40 blood
So we have a chance to earn also the skins etc within a difficulty everyone can enjoy.