The ninth rebirth requires 1 billion credits, which feels a bit excessive—even with all skills enabled, you cannot reach that order of magnitude.
Also, since special pegs are provided, it would be nice if each slot could display a count and a distribution chart (along with a clear button) to help judge whether the peg settings are having a noticeable effect. It would also be preferable to have a one‑click remove for all special pegs, rather than having to manually remove each one.