For the exponential degradation: probably correct, I wanted to keep Experience resets fast, so that is what I ended up doing. It might've been better to use a polynomial formula instead. The 3x should give you more than 2 seconds though, since evasion loss doubles every 30 seconds.
Action speed: also a valid complaint, probably a side-effect of how I implemented it. When I was playtesting I thought it was okay, though I might've overestimated players' clicking tolerance. I probably should've removed the 3x to work, but it is what it is.
2k energy softcap: I thought it might've incentivized people to use their energy wisely? Though looking back that was probably short-sighted as I originally thought of using it as a mechanic (which I never got to), and in the current state there's really nothing strategic to use it on. The Jars upgrade doesn't influence it at all since the softcap is just a divisor, although maybe the effect of Jars should've been applied after the softcap.
Not related to any of the issues but: thank you for giving detailed feedback. I've seen other games for this jam where people essentially say "this game sucks don't play it", so thank you for taking the time to write a detailed comment. It really helps!!!