Thanks for playing and the feedback!
I agree on the economy side of things. The scaling of costs is currently too harsh so it's difficult to get enough for continuous upgrades each new round. That likely also heavily contributes to the "grindy" feel as things progress so I'm glad that your feedback further confirms that.
Show exact stats and the exact updated value of stats is definitely a good idea and probably a necessary quality of life update so I'll add that to the plans for sure.