Ah, damn, that's great! Not CoreXY, but I'm sure someone will put this on a CoreXY printer, and then no more bed leveling!
Vorons also have a nozzle probing design: https://github.com/VoronDesign/Voron-Tap
With a BLTouch, you need to adjust the z-offset, because the nozzle tip and the BLTouch trigger height are not the same. Once that is calibrated, it should continue to work fine as long as the sensor is working properly.
I think it mainly comes down to the accuracy of the sensor. If your sensor gives you a +-0.03mm reading when probing the same spot, then you will have high and low spots in your bed mesh that you can't correct with z-offset.
This could explain your issues with the BLTouch you mentioned in another thread here. I have various brands of knockoff BLTouch sensors, and the worst one had a +-0.02mm range when measuring points, which made it impossible to get a good bed mesh. The one I replaced it with had about a +-0.005mm accuracy, which fixed my issues with the low and high spots.
The pressure sensor on the hottend is superior to any other method, because it has much better resolution (though maybe not better than the Beacon), and it can adjust to print conditions in real time, which no other start-of-print sensor can do.
EDIT: I'm not sure, this article says it can detect spaghetti just from the pressure difference, for example:
https://all3dp.com/1/nextruder-prusa-xl-deep-dive/
It also hints at detection of the height while printing.
They currently only use the load cells for bed leveling: https://www.youtube.com/watch?v=F7ETSVu04ao&t=940s
I could be wrong, but I would expect that the load cell readings would be far too noisy in order to determine the height of the nozzle while printing. Even if they were accurate, different materials would also behave differently due to different viscosities.
I do have two BLTouch printers and lots of Prusas with the PINDA inductive sensor. What excites me about direct nozzle force sensing is that it eliminates the need to calibrate z height offset between the sensor and the nozzle. I don’t know if Bambu’s bed sensor is as good as Prusa’s nozzle sensor but anything that eliminates the mechanical stack up between nozzle and sensor is an improvement IMO.
Though I do realize much of my gripes come from the fact that the PINDA mount on the Prusa Mk3s is kinda weak and I’ve had several fail, requiring an annoying service job.