Additional Wiper Level Speeds

Replace the four manual wiper settings with 12 selectable levels while keeping Off and Auto directly accessible.
The goal is finer control when one setting wipes too often and the next does not wipe often enough, especially in light rain, mist and road spray.
Use a simple slider with a large current-level number and minus/plus controls. Drivers could also adjust the level using the left steering-wheel scroll wheel while the wiper menu is open. Allow direct selection of the highest level without cycling through every setting. Preserve the existing single-wipe and washer controls.
Levels should progress from widely spaced intermittent wipes to continuous wiping. If the hardware supports only two continuous speeds, levels 1-10 could provide progressively shorter pauses, with 11 and 12 retaining the current continuous low and high settings. Tesla would calibrate the intervals for each supported vehicle.
Remember the last selected manual level for quick reuse, while keeping Auto available at a touch. Additional manual choices would complement improvements to Auto.
Deliver this through a software update wherever the existing wiper hardware supports it.