I feel like the app has not evolved in the past few years. I have donated and used it for about 3 years and I haven't noticed improvements in the descriptions and recommendations of the wakelocks/alarms. I'm still unsure about what's safe to limit and what's not, and things that are deemed safe to limit are actually not: net_scheduler interrupts my data connection while browsing for example, even when using the recommended limit value.
A thread is recommended in OP with safe alarms wakelocks and services to limit.