OK, good to know about that sleep is recommended in MacBooks. As an old Windows user I have so gotten used to turn off the machines always after use, as sleep and hibernation modes are more or less problematic at times and since booting does not take that long it has not been an issue for me, and is not even with my MBP, I can wait that 45 seconds easily, my comment was just about that it is still rather slow for some reason compared to Windows. I was expecting more from MacOS being optimized only for Apple computers, not like Windows where are like millions of manufacturers with all kinds of hardware combinations compared to Apple that has only few configurations and much more easy to optimize.
Also as my MBP seem to lose these days anywhere from 0,5% to little over 2% overnight just powered off, I think drain in sleep mode would be much more, so this way I have more predictable battery left when I use it next time.
Do you think it could be because of the low clock speed?
that 1.4 GHz base clock is a real turn off for me.
It has nothing to do with the clock speed. Practically 1.4 is almost as fast as 2.4. This is more marketing, as most peoples think bigger number equals better and faster.
1.4 got turbo more when it needs more "torque", so nominal 1.4 is not much limitation. Sure 2.4 has better cooling so it may run longer in turbo mode, or at least is able to keep cooler doing that but that's about it.
I have for fun compared power consumption in full load between 2.4 and 1.4 model and based on Coconut, the power draw in 2.4 is only few watts more than in 1.4 during full CPU load. So basically that mean 1.4 cannot anyway be capped to 15W in turbo more, I'd say it is more like 25W vs 28W (that 3W is about the difference when both running on full CPU load), because you would see much bigger difference in power draw on full load it the difference was 15W vs 28W. Just go check it yourself if you don't believe. Also running CPU benchmarks, you can see that the difference between the two is negligible.
Even when they came out with the 2016 model refresh with 2.0GHz base clock I was dissapointed
If it isn't at least 2.6 GHz I'm out
Marketing seems to work as they intended.

Honestly, go compare the machines yourself and you will see.
EDIT:
I do use a MacBook core m3 which is obviously not the greatest processor but runs good very snappy
If you are happy with core m3, I think you will be amazed with any current MBP 2018-2019 model.