Hi, PJ!
A side thought. I was thinking, like, if nrf52 is good enough for the development and the final product, do you need to go for an nrf54 even, since the latter has a second core which may be an overkill for the project. And while the power consumption became better for ~20%, even nrf52 power consumption is excellently good for lots of the projects.
However, a totally economical factor: NRF54 DK is 20% cheaper, than the nfr52 DK, and the “raw” nrf54 chip is 3$ vs 4$ of nrf52840 chip. Which means, that it is cheaper to run the project on the latest chip. Like no brainer, right? Am I missing anything?