BosanskiSeljak why don't you buy Repentance? It adds a metric ton of new stuff to unlock.
I bought it on release, played about 20-30 hours and finished a few post-it notes. I just wasn't feeling it, I feel like it takes away what makes Binding of Isaac fun. The cheap tricks, able to break the game on almost every run, getting OP, etc. The game doesn't do well being more balanced and Repentence shows that. AB+ did add some changes I didn't like but it wasn't even close to Repentence.
I don't have time in my life to fully focus another few hundred hours on a game like this. I may be wrong but I 100% a save file in 90hours on AB+, you're able to dodge the RNG bullshit if you're good enough, and that eden win streak is almost 450 right now. Repentance nerfs too many things and just makes the game boring. I won't make a sweeping statement of it, but after my time with it , it really feels like this stupid game that's supposed to be fun to break started taking itself too seriously.