I think the primary issue is the incorrect interest rates sometimes quoted to depositors and borrowers.
As described here, the quoted and actual rates diverge exponentially as it gets above 10%. This exists on every market so it’s not AMPL specific, but AMPL is uniquely exposed because the interest rate is very high at the top end of utilization.
Right now, users need to look up the utilization rate in this table, curve #1, to know the applied rate.
I don’t know if this is directly within the scope of Aave governance since it can only be addressed in the frontend. However, it should be looked at as soon as possible by the maintainers.