Just merged a feature in #KDE Plasma 6.7 that might make you happy: a way to "unify" your mouse pointer and the tablet pointer. You may had to resort to other software to do this, but now it's built-in to your desktop environment

In previous versions (or with this option off), your mouse cursor would start from the last position it was in - not caring where you had your stylus pen. This is useful for users whom switch between the two often ️