The Realms section needs some serious tuning. It's needlessly grindy (even for a grindy idle game) and prone to getting gut punched by bad rng. There's nothing fun about spending 50 minutes slogging thru a level to get blocked from the last node by terrain you can do nothing about.
Sheild and Screamer nodes need to be dialed back, if not in potency than at least in frequency, they're way too common. I finished 4 realms out of 8 and I can't make myself bother with the other 4. Seriously unfun.