And also the joycon **already** has strong magnets inside of it that would probably intefere with hall effect sticks. It's not a silver bullet.

Joycon doesn't have magnets the switch itself does. Although when docked with the switch it probably would interfere.

Ah, so that’s why joycons attach magnetically this time! /s

I worked at a company that relied on magnetometers (digital compass) and used strong magnets as well to attach the product to existing infrastructure. All we needed to do was calibrate the sensors with that magnetic field and we got very accurate results. We even had a method for users to do this in the field if something in their environment changed, our method was a _lot_ more precise (we had a motorized, standard rig to do the rotations), but you can get _really_ good results just by following some simple directions. I _highly_ doubt it would be an issue here. Worst case scenario, fall back to a relatively user-friendly calibration process. The main goal is to get the device to rotate in all axes, and slowly enough to get a reading for a range of angles. The process wouldn't be _that_ different than those fingerprint sensor things, but with rotation instead of touching a sensor. They do something similar already with the Ring Fit calibration, so I don't think it would be a deal-breaker.

The Hall effect sensor could be calibrated to ignore the magnets holding the joycons. They’re stationary magnets so they could literally just calculate their effect on the Hall effect sensor

If the magents are in the handheld it would mean that they would need to be recalibrated every time the joycons are taken off right? Thatcwould be terrible in a consumer product if I'm understanding correctly.

No, it can detect when it's connected, to it would just switch to the other calibration factors.

I don't know why i didn't think of that. Was kinda trying to figure out why not use them when they aren't _that_ much more expensive considering how expensive the new joycons will probably be.

The cynic in me says, "so they can sell more replacements," but there could be a technical reason that I'm not aware of. I'm not familiar with the technical details of hall effect sticks, so I could very well be missing some downsides.

The pentiometer joysticks were fine, its just manufacturers all cheaped out and produce inferior ones now. Its a win win for them, cheaper to produce and you buy more when they break! Same damn thing happened with mouse buttons.