Thanks for feedback!
1) Regarding large numbers - this is done on purpose, since this is a clicker and software have default data types that can only contain certain large numbers. I added system to convert a big values into a short human-readable format such as 1.23K, 5.6M, 7.88aa, 4.12zz, etc, but at the point when those values exceeded, the game uses a special class to deal with very large numbers bigger in magnitude than 1e308, up to as much as 1e(9e15).
2) I'll rebalance passive skills and make them more effective!